In the Supreme Court of Georgia
Decided: May 28, 2025
S24G1299. THE STATE v. WIERSON.
PINSON, Justice.
Michelle Wierson was charged with vehicular homicide after
she allegedly caused a fatal car accident while speeding. Before trial,
two psychiatrists concluded that, at the time of the accident, Wierson lacked the mental capacity to tell right from wrong and suffered
from a delusional compulsion that caused her to speed. Relying on
those conclusions, Wierson filed notice of an intent to plead not
guilty by reason of insanity. The State then moved to introduce evidence that, a few weeks before the accident, Wierson stopped taking
some of her psychiatric medications. The trial court granted the
State’s motion, but the Court of Appeals reversed in a pre-trial appeal, holding that evidence of medication non-compliance is not relevant to whether the statutory defenses of insanity are available to a defendant. We granted review to address that question, and also
to reconsider Bailey v. State, 249 Ga. 535 (291 SE2d 704) (1982),
which held that those statutory defenses are not available to a defendant who brought about the relevant mental state “intentionally”
or “voluntarily.”
1. Background
(a) Wierson was charged with homicide by vehicle and reckless
driving after she allegedly drove at high speed and struck another
car, killing a passenger in the other car. Wierson had before been
diagnosed with bipolar disorder, and at the jail after her arrest, she
was described as being in a “manic state . . . exhibiting multiple
symptoms of bipolar manic episodes.” She was soon released on bond
to a mental-health facility for treatment and evaluation. The doctor
who saw her there noted that Wierson’s prescribed treatment for her
condition included at least four medications. But there was evidence
that Wierson had stopped taking at least three of those medications
several weeks before the accident.
After her release from the facility, Wierson was examined by
2
two more psychiatrists, one hired by the defense and the other appointed by the court. The two psychiatrists concluded that, on the
day of the accident, Wierson was under a delusion that God had told
her that her daughter’s life was in danger, that it was God’s will that
she rush to rescue her daughter, and that God was driving her car.
The psychiatrists agreed that, because of that delusion, Wierson was
not able to distinguish right from wrong and was suffering from a
delusional compulsion that overmastered her will to resist committing the alleged offense.
Based on the psychiatrists’ conclusions, Wierson filed a notice
of intention to plead not guilty by reason of insanity. Under the
Georgia Code, a defendant can be found not guilty by reason of insanity if she qualifies for either of two statutory defenses, which we
will refer to collectively as the “insanity-defense statutes.”1 The first,
which is based on “mental incapacity,” provides:
A person shall be found not guilty of a crime if, at the time
1 We use this term although the statutes themselves do not use the word
“insanity,” because the Code provides elsewhere that a person who “meet[s] the criteria” of these statutes is considered “[i]nsane at the time of the crime.” See OCGA § 17-7-131 (a) (1).
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of the act, omission, or negligence constituting the crime,
the person did not have the mental capacity to distinguish
between right and wrong in relation to such act, omission,
or negligence.
OCGA § 16-3-2. The other defense, which is based on a “delusional
compulsion,” provides:
A person shall be found not guilty of a crime when, at the
time of the act, omission, or negligence constituting the
crime, the person, because of mental disease, injury, or
congenital deficiency, acted as he did because of a delusional compulsion as to such act which overmastered his
will to resist committing the crime.
OCGA § 16-3-3. As noted above, Wierson’s psychiatrists found both
that she was not able to distinguish right from wrong and that she
suffered from a delusional compulsion, so her plea invoked both insanity-defense statutes.
The State responded to Wierson’s insanity plea with a motion
in limine to admit evidence that Wierson had stopped taking at least
some of her prescribed medications. The State argued that if Wierson planned to mount an insanity defense, the jury should hear evidence that Wierson had voluntarily contributed to her mental state,
“just as if the issue were voluntary intoxication or other voluntary
4
incapacitation.” Wierson countered with a motion in limine to exclude any evidence of “medication non-compliance.” She contended
that the only question relevant to an insanity defense is whether the
defendant was under the relevant mental state at the time of the
alleged offense.
(b) The trial court granted the State’s motion to introduce evidence of medication non-compliance. The court explained that the
question was novel in Georgia law. But it concluded that evidence of
medication non-compliance was relevant to Wierson’s insanity defense, and that the probative value of the evidence was not substantially outweighed by the danger of unfair prejudice.
In an appeal before trial, the Court of Appeals reversed. See
Wierson v. State, 372 Ga. App. 102 (903 SE2d 792) (2024).2 The court
2 The Court of Appeals’ decision resolved two consolidated appeals: Wierson’s appeal of the trial court’s medication non-compliance order, which is the subject of this opinion (Case No. A24A0241), and the State’s cross-appeal from a separate trial court order that had declined to prevent Wierson from asserting the insanity defense at all (Case No. A24A0242). See Wierson, 372 Ga. App. at 104. In the latter appeal, the Court of Appeals unanimously affirmed the trial court’s order and concluded that Wierson could assert the insanity defense. See id. at 112-113 (3). We did not grant review of the court’s judgment in that appeal, and it is not addressed by this opinion.
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held that evidence of medication non-compliance should have been
excluded because it was not relevant. See OCGA § 24-4-402 (“Evidence which is not relevant shall not be admissible.”). As to the insanity defenses, the court explained that the insanity-defense statutes make no mention of how or why a defendant may have come to
her mental state, but say only that she is not guilty if she has that
mental state at the time of the offense. See Wierson, 372 Ga. App. at
105 (1) (a). The court then reasoned: “To conclude that a defendant
may still be found guilty of a crime if her mental incapacity or delusional compulsion can be attributed to medication noncompliance
would be to write an exception into the statutes, which this Court is
not authorized to do.” Id. at 107 (1) (a). The court therefore held that
Wierson’s failure to take her medication was not relevant to her insanity defenses.
Separately, the court held that evidence of medication noncompliance was not relevant to show Wierson’s intent to commit vehicular homicide and reckless driving — an argument that the State
made for the first time on appeal. Id. at 105 (1) (a), 111 (1) (b). The
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court reasoned that the charged offenses did not require the State to
prove that Wierson intended to speed or to drive recklessly, but only
that she voluntarily committed the act that the statute prohibits, so
it did not matter whether she believed she was justified in doing so.
See id. at 111 (1) (b).
The Court of Appeals then addressed the authority that the
State relied on, most notably Bailey, 249 Ga. 535. Bailey involved a
paranoid schizophrenic who, against his doctor’s advice, voluntarily
entered a highly stressful situation, and then “overreacted” and
killed two people. Bailey, 249 Ga. at 536-537 (1). This Court concluded in Bailey that a “delusional compulsion” defense was not
“available” to the defendant because, even if he was suffering from
such a delusion, he had “brought that delusion about” voluntarily.
Id. at 537-538 (1). In this case, the State relied on Bailey and argued
that Wierson similarly “brought [her] delusion about” by not taking
her medication. But the Court of Appeals majority concluded that
Bailey did not control because its holding was limited to its facts:
“The holding in Bailey was simply that the particular facts of that
7
case did not justify a jury charge on delusional compulsion.” Wierson, 372 Ga. App. at 108-109 (1) (a).
Judge Padgett dissented. The dissent agreed with the majority
that the insanity-defense statutes do not create an exception for
medication non-compliance or other self-inducement. See id. at 114.
But the dissent believed that this case was controlled by Bailey,
which recognized an exception to the insanity-defense statutes that
applied to this case. See id. at 114-115.
We granted review to determine (1) whether evidence that a
defendant voluntarily contributed to her mental state at the time of
the crime is relevant to whether the statutory insanity defenses are
available, and (2) whether Bailey should be reconsidered.
2. Analysis
(a) The Insanity-Defense Statutes
To start, let’s put aside Bailey for the moment and consider the
statutory insanity defenses on their own. When we interpret a statute, we give the text its “plain and ordinary meaning” at the time it
was enacted, Deal v. Coleman, 294 Ga. 170, 172 (1) (a) (751 SE2d
8
337) (2013) (citation and punctuation omitted), and we find that
meaning by reading the relevant language “in its most natural and
reasonable way, as an ordinary speaker of the English language
would,” State v. Islam, 321 Ga. 30, 32 (912 SE2d 632) (2025) (citation
and punctuation omitted). To that end, we must consider the text
not by itself, but in the “context in which it appears,” Islam, 321 Ga.
at 32 (citation and punctuation omitted), including the surrounding
statutory language, the statute’s structure and history, and other
law that makes up the legal backdrop against which the language
was enacted. See State v. Harris, 319 Ga. 665, 667 (906 SE2d 402)
(2024) (citation omitted). We also have a set of rules and presumptions to help us identify the most reasonable meaning from among
the possible meanings. Among these canons of construction, we have
said that we generally should avoid a construction that would make
some statutory language “mere surplusage,” Middleton v. State, 309
Ga. 337, 342 (3) (846 SE2d 73) (2020) (citation and punctuation omitted). And, just as important — and it should go without saying —
we may not read into a statute language that the General Assembly
9
did not enact. See, e.g., White v. State, 305 Ga. 111, 118 (2) (823 SE2d
794) (2019) (court “was not authorized to write a ‘relevance’ exception into” the Rape Shield Statute); Luangkhot v. State, 292 Ga. 423,
427 (4) (736 SE2d 397) (2013) (declining to construe language in
wiretap statute that grants superior courts the general authority to
issue investigative warrants as granting courts the broad authority
to authorize wiretaps outside their judicial circuits, because “[i]f our
legislature had intended to grant superior courts” that broad authority, “it could have done so explicitly”).
With those principles in mind, we turn to the statutory insanity defenses. The plain language of those statutes says that a defendant is not guilty if, “at the time of the act, omission, or negligence constituting the crime,” she lacked the mental capacity to distinguish right from wrong or was under a delusional compulsion
that made her unable to resist committing the crime. OCGA §§ 16-3-2 & 16-3-3. Neither statute provides any exception to when these
defenses are available. They do not say anything about the cause of
the defendant’s mental state at the time of her “act, omission, or
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negligence.” And they do not say that the insanity defenses do not
apply if the defendant helped bring about her own mental state, nor
do they consider the defendant’s mental state before the crime. Put
simply, the plain language of the insanity-defense statutes gives not
even a hint that these defenses would not be available to a person
who has “brought about” the relevant mental state voluntarily,
whether by not taking medication or otherwise.
The absence of any such language is especially notable when
the insanity-defense statutes are considered in their relevant context. See Harris, 319 Ga. at 667. Those statutes are part of Article 1
of Chapter 3 of Title 16 of the Georgia Code, which deals with “Defenses to Criminal Prosecutions” that are based on the defendant’s
“Responsibility.” Within Article 1, the Code section right next door
to the insanity-defense statutes establishes a defense based on the
defendant’s intoxication. See OCGA § 16-3-4. That intoxication-defense statute uses language that tracks the insanity-defense statutes: “A person shall not be found guilty of a crime when, at the time
of the act, omission, or negligence constituting the crime, the person,
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because of involuntary intoxication, did not have sufficient mental
capacity to distinguish between right and wrong in relation to such
act.” OCGA § 16-3-4 (a). But notably, quite unlike the insanity-defense statutes, the intoxication-defense statute goes on to include an
exception to the defense in a separate subsection: “Voluntary intoxication shall not be an excuse for any criminal act or omission.”
OCGA § 16-3-4 (c). By including that explicit exception, the intoxication-defense statute enacts the General Assembly’s judgment
that, in some cases, a defendant who bears some responsibility for
her own mental state may not avail herself of a mental-state defense. It shows that the General Assembly knows how to carve out
that kind of exception. Yet the General Assembly did not do so for
the insanity defenses. Generally, when two statutes deal with the
same subject matter, are grouped together, and use largely the same
language, but one includes an additional provision that the other
does not, this is strong evidence that the omission was intentional.
See Mooney v. Webster, 300 Ga. 283, 288-289 (794 SE2d 31) (2016)
(“This Court is mindful of the long-recognized doctrine of statutory
12
construction, expressio unius est exclusio alterius, which discourages
judicial recognition of exceptions not specifically set forth in a legislative enactment when other exceptions are expressly stated.” (emphasis added)); Allen v. Wright, 282 Ga. 9, 13-14 (3) (644 SE2d 814)
(2007) (noting that when interpreting statutes, the express inclusion
of one thing gives rise to an inference that those omitted were intended to be excluded).
If that were not evidence enough that these statutes do not
take away a person’s insanity defense if someone “brings about”
those mental states “voluntarily,” consider the legal backdrop
against which these statutes were enacted. See Summerlin v. Ga.
Pines Cmty. Serv. Bd., 286 Ga. 593, 594 (2) (690 SE2d 401) (2010)
(“The General Assembly is presumed to enact all statutes with full
knowledge of the existing condition of the law and with reference to
it.”). These statutes were enacted in their current form in 1969. See
Ga. L. 1968, pp. 1250, 1270, § 1 and Compiler’s Note. Before that,
their predecessor statute also provided a legal defense for those
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without mental capacity (though the old law used the terms “lunatic” and “person insane”). The old law, which goes back to at least
1817 (when it was first codified), distinguished between a defendant’s periods of “lunacy or insanity,” on the one hand, and what it
called “lucid intervals,” on the other, and it made clear that the defendant was culpable only for acts committed during the lucid intervals:
A lunatic or person insane, without lucid intervals, shall
not be found guilty of any crime or misdemeanor with
which he may be charged, provided the act so charged as
criminal was committed in the condition of such lunacy or
insanity; but if a lunatic has lucid intervals of understanding, he shall answer for what he does in those intervals as if he had no deficiency.
Code Ann. 1933 § 26-303 (emphasis added). See also, e.g., Code Ann.
1882 § 4296; Code Ann. 1860 § 4192; Penal Code of 1817, Div. I, Sec.
V (Ga. L. 1816, p. 143). Like the current statutes, the former law
was explicit that the key question was the defendant’s mental capacity at the time of the crime. And the decisional law applying those
old Code sections likewise focused on the defendant’s mental capacity at the time of the crime, without regard to how it came about.
14
See, e.g., Clark v. State, 167 Ga. 341, 346 (145 SE 647) (1928) (trial
court correctly instructed the jury that the defendant would “not be
excusable . . . on the ground of mental disease or insanity” if he “committed the act charged against him . . . and . . . at the time of the
commission he was not mentally incapable of distinguishing between right and wrong”); Baughn v. State, 100 Ga. 554, 556 (28 SE
68) (1897) (“under the law of this State no person can be legally convicted of a crime committed while in a moment of irresponsibility
growing out of an unsound mind”); Orange v. State, 77 Ga. App. 36,
40 (47 SE2d 756) (1948) (although the defendant had been adjudged
insane before the crime, it was up to the jury to decide “whether he
was insane at the time of the commission of the crime”); Murphy v.
State, 70 Ga. App. 387, 389-390 (28 SE2d 198) (1943) (“the only matter at issue, before the commissioners at the time of their inquiry, is
whether or not the accused was insane at that particular time” of
the offense, although evidence of the defendant’s acts before and after the offense may be relevant “for the purpose of shedding light on
15
the defendant’s state of mind at the time the alleged crime was committed”). All of which is to say that, for more than a century before
our current insanity-defense statutes were enacted, Georgia law has
recognized similar defenses, and yet it never mentioned whether the
person induced her lack of mental capacity as even a relevant consideration, much less an exception to this longstanding defense.
The State points out that certain Court of Appeals decisions
have generally authorized juries to consider evidence of the defendant’s actions and mental state before the crime. But those decisions
merely held that evidence of the defendant’s behavior before the
crime (and during and after the crime) could be relevant to the question of whether the defendant in fact had the relevant mental state
“at the time of” the incident — whether lacking the mental capacity
to tell right from wrong or under a delusional compulsion. See, e.g.,
Wilson v. State, 9 Ga. App. 274, 281 (70 SE 1128) (1911) (“Whether
an act was caused by a diseased mind is to be determined primarily
from the indicia presented by the act itself, and then from the results
of an examination of the physical, moral, and mental condition of
16
the accused before, at, and after the act in question.” (emphasis
added)); Murphy, 70 Ga. App. at 389-390. In other words, a jury
could always consider evidence from before the crime to determine
the defendant’s mental state “at the time of the act, omission, or
negligence constituting the crime.” But none of those decisions held
that how that mental state came about — whether “voluntarily” or
otherwise — mattered to whether these defenses were available. So
those decisions are consistent with the straightforward conclusion
that these statutes do not make the defenses unavailable to a person
who “brought about” the relevant mental state.
In short, the plain language of these statutes, their context,
and their long history all align: the insanity defenses are available
even to a person who has “voluntarily” induced the relevant mental
state. And applied to this case, that would mean that whether Wierson stopped taking her medication some weeks before the accident
is not relevant to whether the statutory insanity defenses are available to her.
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(b) Reconsidering Bailey v. State
But we cannot stop there. As we mentioned earlier, one of our
decisions, Bailey, is in conflict with this otherwise straightforward
conclusion that the insanity-defense statutes do not make the defenses unavailable to a person who voluntarily induced the relevant
mental state before the crime at issue was committed. That conflict
was highlighted by the Court of Appeals below: the majority distinguished Bailey and held that its exception did not apply to Wierson’s
medication non-compliance, while the dissent would have held that
Bailey controlled, making the insanity defenses unavailable in this
case. So we turn to Bailey now, addressing first the disagreement
below about whether it controls this case, and then whether it
should be reconsidered.
(i) Bailey involved a defendant with paranoid schizophrenia
who, against his doctor’s orders, put himself into a highly stressful
situation and ultimately killed two people. Bailey, 249 Ga. at 537-538 (1). Bailey contended that he shot the victims while suffering
under a delusional compulsion, see id. at 536 (1), and so he tried to
18
invoke the statutory delusional-compulsion defense. But the trial
court refused to sustain that plea or to instruct the jury about the
statutory defense of delusional compulsion. Id. at 536-537 (1).
This Court affirmed that decision. In doing so, we acknowledged that, under our precedent, the statutory defense of delusional
compulsion is available if there is evidence “that the defendant was
laboring under a delusion, that the act itself was connected with the
delusion and furthermore that the delusion would, if true, justify the
act.” Id. at 537 (1) (citations and punctuation omitted). But then we
took another step: without reasoning or precedent in support, we declared that the “necessary implication” of the insanity-defense statutes was that “a chronic paranoid schizophrenic may no more voluntarily and intentionally induce his delusion than a chronic alcoholic
voluntarily may induce his drunkenness then expect the homicide
to be excused rather than criminal.” Id. (citing Code Ann. 1933 § 26-704, predecessor to OCGA § 16-3-4, the intoxication-defense statute). And so we concluded that, even if Bailey had suffered from a
19
delusion that “properly would invoke” the delusional-compulsion defense, the defense was not available to him because he “brought that
delusion about with as much premeditation as a chronic alcoholic
who, in the same circumstances, might have prepared himself for
the impending confrontation by imbibing alcohol to excess.” Id. at
538 (1).
(ii) The question whether a precedent controls a decision in a
later case turns on the scope of the relevant holding of that precedent. In a system of precedent, courts are bound to stick to and apply our past decisions rather than deciding each case on a blank
slate. See Wasserman v. Franklin County, 320 Ga. 624, 645 (II) (B)
(1) (911 SE2d 583) (2025). Courts “apply” those past decisions by
discerning the reasoning that was necessary to their outcomes and
using the same reasoning (often distilled into rules of decision or legal principles, standards, or tests) in the cases before them. That
reasoning that was necessary to the past decision is, speaking generally, its holding. See Holding, Black’s Law Dictionary (12th ed.
20
2024) (“[a] court’s determination of a matter of law pivotal to its decision; a principle drawn from such a decision”); Bryan A. Garner et
al., The Law of Judicial Precedent 44 (2016) (defining a holding as
“the parts of a decision that focus on the legal questions actually
presented to and decided by the court”). So, when we ask whether a
precedent “controls” in a case before us, what we are really asking
is whether any holding in a past decision would require a particular
outcome if applied to the facts of the case before us.
Pinpointing the holding of a past decision is more art than science. There exists a range of views on how to define a holding as a
general matter. See Garner at 45-46 (discussing how “commentators
and judges don’t uniformly define what counts as a holding”). And
even if we can agree to define a holding generally as the reasoning
necessary to a decision, figuring out what reasoning is truly “necessary” can be tricky, particularly when the reasoning set out in an
opinion is wide-ranging (which parts were really necessary?) or ambiguous (what exactly was the reasoning?) or even implicit (what
were they thinking?). One judge’s holding may be another’s dicta.
21
Compare, e.g., Smith v. State, 236 Ga. 5, 10 (6) (222 SE2d 357) (1976)
(saying that the Court “held” in State v. Stonaker, 236 Ga. 1 (222
SE2d 354) (1976), that it is not error for the trial court to fail to instruct the jury on a lesser-included offense in the absence of a written request), with Wipfel v. State, 320 Ga. 84, 88 (2) (a) (907 SE2d
639) (2024) (describing the same legal principle from Stonaker as
“necessarily dicta”).
But one point of relative agreement is that a holding must be
something more than the result of the case given its precise facts.
See Seminole Tribe of Florida v. Florida, 517 U.S. 44, 67 (II) (B) (116
SCt 1114, 134 LE2d 252) (1996) (“When an opinion issues for the
Court, it is not only the result but also those portions of the opinion
necessary to that result by which we are bound.”). Were it otherwise
— if the only binding feature of past decisions was that their particular result is mandated given an identical set of facts — no precedent would be truly binding on future courts and litigants. After all,
no two cases are precisely the same, and the universe of factual circumstances is infinite. And indeed, when courts “distinguish” past
22
precedents, they do not look for just any facts that are different from
the case before them, but rather for circumstances relevant to, and
which place the current case outside of, the rule of decision of the
precedent in question. See, e.g., Holmes v. State, 318 Ga. 213, 222-223 (2) (b) (ii) (897 SE2d 829) (2024) (distinguishing precedent holding that the Fifth and Sixth Amendments to the United States Constitution prohibit the State from introducing a psychiatrist’s testimony from an earlier competency-to-stand-trial hearing at the penalty phase of a death-penalty trial to support future dangerousness,
because, in the case before the Court — and unlike in the precedent
decision — the defendant “put his mental condition at issue” by
claiming an insanity defense); Georgia CVS Pharmacy, LLC v. Carmichael, 316 Ga. 718, 743 (IV) n.18 (890 SE2d 209) (2023) (distinguishing cases concerning foreseeability in the context of proximate
cause as not controlling on question of foreseeability in the context
of the duty of care, because the two kinds of foreseeability are “distinct”); Jackson v. State, 306 Ga. 266, 274 (5) (a) (830 SE2d 99)
(2019) (distinguishing precedent concerning Georgia’s constitutional
23
protection against self-incrimination because those cases did not address question before the Court of whether the State can elicit testimony that the defendant failed to come forward to the police with
information about the crime). So although we do not purport here to
set out a precise definition of a holding, we can safely say that the
holding of a judicial decision is more than just its result on a given
set of facts — it includes, to some degree, the reasoning or principles
that were necessary to that decision.
This is where the Court of Appeals went wrong in reading Bailey. The court concluded that Bailey did not control the decision
whether one of the insanity defenses was available to Wierson here
because “[t]he holding in Bailey was simply that the particular facts
of that case did not justify a jury charge on delusional compulsion.”
Wierson, 372 Ga. App. at 108-109 (1) (a). As we just explained, that
“facts plus result” view of a holding is too narrow. The Bailey Court
announced and applied a clear (if unsupported) rule: the insanity
defenses are not available to someone who “brought about” or “in24
duced” a delusion “voluntarily” or with some degree of “premeditation.” Bailey, 249 Ga. at 537-538 (1).
If Bailey’s rule is that the insanity defenses are not available
to a defendant who intentionally takes some action to induce one of
the relevant mental states, we see no serious basis for distinguishing
this case. Sure, this Court applied that rule to a “chronic paranoid
schizophrenic” who ignored his doctors’ “advice to avoid highly
stressful confrontations,” id. at 537 (1), whereas this case involves a
person with bipolar disorder who may have intentionally stopped
taking her psychiatric medication. But there is no indication in Bailey that the particular kind of mental illness or specific delusioninducing conduct had any bearing on the legal rule it announced and
applied. To the contrary, we cited the intoxication-defense statute,
which included an exception for all voluntarily intoxicated defendants, see Code Ann. § 26-704 (1968), indicating that the no-voluntary-inducement rule was not specific to the unique facts of that
25
case. See Bailey, 249 Ga. at 537 (1).3 So those distinctions cannot
remove this case from Bailey’s reach. Under Bailey’s rule, just as
Bailey was not entitled to a jury instruction on the insanity defenses
because he “induced” his delusions, evidence that Wierson induced
her delusions by voluntarily skipping her medications would be relevant to whether the insanity defense would be available to her.
(iii) Having now determined that the insanity-defense statutes
cannot be construed to incorporate Bailey’s holding that those statutory defenses are not available to a person who induces the relevant mental state, and that Bailey controls this case, we must decide
whether to keep following Bailey.
“When we consider whether to follow one of our past decisions,
stare decisis is the strong default rule.” Wasserman, 320 Ga. at 645
(II) (B) (1) (citation and punctuation omitted). As we have explained
before, a system built on following precedent rather than arbitrary
discretion not only keeps the body of law more stable, predictable,
3 For this reason, we disagree with the special concurrence’s view that
Bailey’s holding “applies only when the delusion itself was intentionally induced.”
26
and reliable, but also promotes and preserves the rule of law. See id.
In rare cases, however, following a past decision “would do more
harm to the rule of law than overruling it would.” Johnson v. State,
315 Ga. 876, 887 (3) (885 SE2d 725) (2023). So when we reconsider
a precedent, our task is, at bottom, to decide which cost to the rule
of law is greater: “whether getting the law right is worth the cost to
the rule of law of unsettling what had been settled.” Wasserman, 320
Ga. at 647 (II) (B) (1). This assessment cannot be reduced to a “mechanical formula or a multi-factor test,” but we have identified some
guideposts to follow. Id. Among these are features that bear directly
on “rule-of-law concerns,” like indications that the earlier court was
making policy rather than doing law, id. at 645 (II) (B) (1), as well
as a limited set of “practical consequences,” like upending certain
“reliance interests” or “deeply entrenched” rules, id. at 647 (II) (B)
(1).
Applying those considerations here, we conclude that Bailey
must be overruled. Cases that are “unreasoned,” or that “disregard[ ]
the basic legal principles that courts use to do law,” are “ripe for
27
overruling,” because leaving apparently arbitrary or policy-driven
decisions in place can be “especially harmful to the rule of law.” Wasserman, 320 Ga. at 645-646 (II) (B) (1) See also Cobb County v.
Floam, 319 Ga. 89, 94 (1) n.5 (901 SE2d 512) (2024); Ammons v.
State, 315 Ga. 149, 171 (880 SE2d 544) (2022) (Pinson, J., concurring); Cook v. State, 313 Ga. 471, 479 (2) (a) (870 SE2d 758) (2022).
Bailey fits that bill. Bailey turned on a question of statutory construction: whether a statutory delusional-compulsion defense was
available to a defendant who had voluntarily induced his delusion.
But to answer that question, we never even tried to interpret the
statute. Had we done so, we would have been compelled to conclude
that the statute’s language offered no basis for an exception to the
defense and its context confirmed that the legislature did not include
such an exception. But instead, we cited an exception to the statutory intoxication defense found next door to the delusional-compulsion defense, and rather than applying the “long-recognized” rule of
construction that would have confirmed the absence of such an exception, we divined and created a new exception to the defense that
28
the legislature had plainly declined to include. See Mooney, 300 Ga.
at 288-289 (“This Court is mindful of the long-recognized doctrine of
statutory construction, expressio unius est exclusio alterius, which
discourages judicial recognition of exceptions not specifically set
forth in a legislative enactment when other exceptions are expressly
stated.” (emphasis added)). See also, e.g., White, 305 Ga. at 118 (2);
Luangkhot, 292 Ga. at 427 (4). In doing so, it appears that we improperly substituted our judgment for that of the legislature and
made a policy decision instead of doing law — precisely the sort of
decision that our Court has not hesitated to overrule. See, e.g.,
Woodard v. State, 296 Ga. 803, 812 (3) (b) (771 SE2d 362) (2015)
(overruling statutory construction decision that had, among other
things, “disregarded the plain language” of the relevant statute to
create an unwritten exception to it and “undermined the policy-making authority of the General Assembly”).
Bailey is not saved by its status as a statutory-construction
precedent. It is true that leaving a wrong decision of statutory construction in place may be relatively less harmful to the rule of law
29
than declining to disturb a bad constitutional construction precedent: because it is generally easier to revise a statute than it is to
amend the Constitution, the likelihood that a wrong decision of statutory construction will remain part of our body of law is relatively
lower than if the decision involves constitutional construction.4 See,
e.g., Olevik v. State, 302 Ga. 228, 245 (2) (c) (iv) (806 SE2d 505)
(2017). But we have also consistently said that “stare decisis applies
with less force” when, as here, “we have misinterpreted a statute by
failing to consider the statute’s language at all.” Nalls v. State, 304
Ga. 168, 179-180 (3) (b) (815 SE2d 38) (2018). See, e.g., State v.
Burns, 306 Ga. 117, 122 (2) (829 SE2d 367) (2019) (overruling statutory-construction decision that was “reached without any meaningful analysis”); Southall v. State, 300 Ga. 462, 464, 467 (1) (796 SE2d
261) (2017) (overruling statutory-construction precedent that was
two sentences long and contained no statutory construction);
4 Reasonable minds may differ on how much less “permanent” an incorrect statutory construction precedent is compared to a constitutional construction precedent, particularly in Georgia, where constitutional amendments are somewhat easier to get across the finish line than at the federal level.
30
Woodard, 296 Ga. at 812 (3) (b) (overruling precedent that disregarded language of statute and applied no canons of statutory construction); State v. Jackson, 287 Ga. 646, 653 (3) (697 SE2d 757)
(2010) (overruling statutory-construction precedent that, in a “oneand-a-half page opinion,” failed to consider the “customary legal
meaning” of a statutory term and did not “look to our then-existing
case law interpreting that term”). See also Mobley v. State, 307 Ga.
59, 73-75 (4) (a) (834 SE2d 785) (2019) (criticizing as “unsound” a
prior decision that interpreted a statute without giving consideration to its legal context or the background law of Georgia at the time
of its enactment). As Justice Blackwell once explained,
We have a duty to ascertain the meaning of the statutory
law, and we must endeavor to do so in a way that is consistent with the familiar and settled principles of statutory interpretation. Sometimes we may get it wrong, and
yet, if we have made our best effort, it may be more appropriately left to the General Assembly to set things
right. But before we call it a day and declare our judicial
work at an end, we ought to try at least once to undertake
the sort of careful textual analysis (including a consideration of relevant context) that, if done properly, would reveal the most natural and reasonable understanding of
the statute. . . . “We ought not follow unreasoned precedent without reason.”
31
Patterson v. State, 299 Ga. 491, 516 (789 SE2d 175) (2016) (Blackwell, J., dissenting) (quoting Crayton v. State, 298 Ga. 792, 803 (784
SE2d 343) (2016) (Blackwell, J., dissenting)). Just so here.
Finally, a look at the practical consequences we have considered in assessing stare decisis does nothing to save Bailey. We are
aware of no “reliance interests” that have built up around Bailey’s
judge-made exception to the insanity-defense statutes, nor can we
imagine that citizens make decisions about their behavior based on
that exception. See Wasserman, 320 Ga. at 647 (II) (B) (1). Nor has
Bailey become “deeply entrenched” in our law, see id. To the contrary, as far as we can tell, the decision has been cited in only eight
other appellate opinions (before this case) since it issued in 1982,
and only one of those opinions, a concurrence, referred to the holding
at issue here. See VanVoorhis v. State, 234 Ga. App. 749, 751 n.3
(507 SE2d 555) (1998) (Beasley, J., concurring). So these considerations do not cut against overruling Bailey either.
For these reasons, stare decisis does not preserve Bailey’s hold32
ing that the statutory insanity defenses are not available to a defendant who “intentionally” or “voluntarily” induced the relevant
mental state. That holding is overruled.
(c) Application
We can now return to Wierson’s case. Given our conclusions
above, resolving this case is straightforward. Wierson pleaded not
guilty by reason of insanity, and she put up evidence — the two psychiatrist reports — that, at the time of the accident, she lacked the
mental capacity to tell right from wrong and also suffered from a
delusional compulsion. Under OCGA §§ 16-3-2 and 16-3-3, if the jury
were to credit that evidence, then Wierson cannot be guilty of a
crime, full stop. The State sought to introduce evidence that Wierson
may have stopped taking her medication before the accident, but the
State’s only justification to the trial court for the relevance of that
evidence — that it would show that Wierson’s mental state was “voluntary” — fails, because that is not a basis for making the statutory
insanity defenses unavailable to Wierson.
Two final points. First, the State made an additional argument
33
for the first time in the Court of Appeals about the relevance of medication non-compliance: that it was relevant not to whether Wierson
could assert an insanity defense, but to whether Wierson had the
requisite criminal intent. See Wierson, 372 Ga. App. at 105 (1). But
the Court of Appeals rejected that argument, see id. at 110-111 (1)
(b), and we did not grant review on the question. So although the
State has made the same argument in its briefing in this Court, we
do not reach the issue. See Rockdale Hospital, LLC v. Evans, 306
Ga. 847, 853 (3) (834 SE2d 77) (2019) (declining to reach issue on
which Court did not grant certiorari); State v. Fletcher, 252 Ga. 498,
500 n.1 (314 SE2d 888) (1984) (same).
Second, on a related note, our conclusion here does not foreclose the admission of evidence of medication non-compliance for all
purposes when a defendant pleads not guilty by reason of insanity.
For example, as we noted above, evidence that a defendant was not
following her medical course of treatment before an alleged offense
might be admissible to show that, at the time of the offense, she
lacked mental capacity or suffered from a delusional compulsion —
34
that is, that she satisfies the requirements for asserting one of the
statutory insanity defenses. But in this case, neither Wierson nor
the State proffered the medication non-compliance evidence for that
purpose. So whether that evidence might be relevant to another purpose is not before us, and we do not address it further.
3. Conclusion
In sum, we ultimately agree with the Court of Appeals that evidence of Wierson’s medication non-compliance was not admissible
to show that she “voluntarily” induced her lack of mental capacity
or delusional compulsion, because the statutory insanity defenses
are available without regard for whether that was true. We also
agree with the Court of Appeals that Bailey does not compel a different conclusion, but for a different reason than the Court of Appeals gave. Contrary to that court’s view, Bailey would control here.
But it was wrongly decided, and today, after considering stare decisis, we overrule its holding that created a judge-made exception to
the statutory insanity defenses. Finally, we do not reach the remaining issues decided by the Court of Appeals in Case No. A24A0241.
35
Judgment affirmed. Warren, PJ, and Bethel, Ellington,
McMillian, and LaGrua, JJ, concur. Peterson, CJ, and Colvin, J., concur specially.
36
PETERSON, Chief Justice, concurring specially.
I agree with much of what is said in the majority opinion.
I agree with the majority opinion’s construction of the insanitydefense statutes. I agree that our invention of an exception to those
statutes in Bailey v. State, 249 Ga. 535 (291 SE2d 704) (1982) was
error. And I agree that we should affirm the judgment of the Court
of Appeals.
Where I part ways with the majority opinion is what to do
with Bailey. The majority opinion defines Bailey’s holding broadly
such that it would control this case, and then proceeds to overrule
Bailey. But the majority opinion’s definition of Bailey’s holding is
unnecessarily broad; in my view, Bailey’s holding is reasonably
understood to be narrow enough that it does not apply here.
The majority opinion frames the holding of Bailey as rendering
the insanity defenses unavailable “to a defendant who intentionally
takes some action to induce one of the relevant mental states.” Op.
at 25. If that is the holding of Bailey, I agree that the holding would
control this case. But Bailey’s discussion of intentionality was not
37
limited to taking the action that induced the delusion; i.e., it was not
just about intentionally (rather than merely negligently) failing to
take precautions against delusions. Instead, Bailey’s reasoning
indicates that its rule applies only when the delusion itself was
intentionally induced: “a chronic paranoid schizophrenic may no
more voluntarily and intentionally induce his delusion . . .” 249 Ga.
at 537 (1). And the Bailey Court reiterated this point three
paragraphs later: “it must be said that he brought that delusion
about with as much premeditation as a chronic alcoholic who, in the
same circumstances, might have prepared himself for the impending
confrontation by imbibing alcohol to excess.” Id. at 538 (1).
Read in that light, I understand Bailey’s holding as this: a
defendant may not voluntarily and intentionally cause a state of
mind that the defendant knew may well result in criminal activity
and then be relieved of criminal responsibility because of the
intentionally induced state of mind. In that reading, the inducing of
the state of mind is akin to a conspiracy to do the bad act initiated
at a time before the state of mind was present. And this case involves
38
no evidence of any such intentionality; unlike Bailey, where the
intentional inducement of delusion happened in the minutes before
the crime, here the discontinuation of medication happened weeks
before the criminal act. So Bailey does not apply, and we have no
need to reconsider it here.
Accordingly, I would arrive at the same conclusion as the Court
of Appeals that Bailey’s holding does not apply to this case (albeit
for somewhat different reasons), and thus I cannot join the majority
opinion, although I do concur in the judgment.
I am authorized to state that Justice Colvin joins in this
concurrence.
39