In 2004, Daniel Wilson was convicted in an Illinois state court of murder while mentally ill, and sentenced to 55 years in prison. After exhausting his state remedies in People v. Wilson, No. 4-07-0359 (Ill.App. Mar. 3, 2008), petition to appeal denied, 228 Ill.2d 552, 321 Ill.Dec. 562, 889 N.E.2d 1122 (2008), he sought federal habeas corpus, was denied relief without an evidentiary hearing (which he had requested), and appeals. He claims to have received ineffective assistance of counsel at his trial, in violation of his federal constitutional rights. He seeks a new trial for murder, or at least an evidentiary hearing in the district court.
As early as 1987 Wilson had begun having delusions that “the Catholics” (unnamed, unspecified — his fear was of some indefinite but immensely sinister Catholic conspiracy, the sort of thing that Queen Elizabeth I and other Protestant monarchs feared with greater justification during the Reformation) were out to get him. The delusions intensified in 1998. He believed that the Catholics were planting cameras in his home to spy on him and were trying to frame him for molesting his adopted teenage daughter. He decided that she was part of the frame up and ordered her from his house. He stopped speaking to his wife after deciding she’d joined the conspiracy, and later, after they divorced, he began suspecting her of having had affairs with Catholics during the marriage. He severed relations with his parents because he thought the conspirators were in touch with them too. He was convinced that the Catholics were spreading lies and rumors about him and that Catholic doc*349tors were giving him false diagnoses of his medical conditions.
His boss, Jerome Fischer, had a starring role in Wilson’s fantasy. Wilson believed that Fischer had hired a man to install the secret cameras in Wilson’s home, spread lies about Wilson, made fun of his health problems before other employees, and was scheming to keep him from home so that it would be easier for the Catholics to install surveillance cameras.
Wilson tried to stay at home as much as possible to protect his home against penetrations by the Catholics and he therefore refused to attend his employer’s company-wide meetings, held in New Hampshire, which would have kept him from his home (which was in Quincy, Illinois) for a week — in his insane thinking, an intolerably dangerous absence. He tried to enhance his home security by buying first toy guns and then real ones and leaving them where the hidden, cameras would see them, to frighten the Catholics. He bought a bulletproof vest, installed additional locks, and nailed the back porch door shut.
On November 19, 2003, Fischer insisted that Wilson accompany him the next day to a company meeting in New Hampshire. Wilson brought up the conspiracy, the cameras, and the efforts to lure him out of his house, and said that for these reasons he didn’t want to go to the meeting. Fischer told him that if he didn’t go he’d be fired.
The next morning Fischer called Wilson to tell him he was on his way to pick him up at his house. Wilson placed a loaded gun in his pocket, opened his front door when Fischer rang the doorbell, and followed Fischer to his car. As soon as Fischer got into the car Wilson shot him dead. He dialed 911 immediately, and, “extremely distraught” (as revealed by the police tape of the conversation), cried and sobbed, repeatedly saying “I can’t believe it” and telling the dispatcher what he had done and that it was a purposeful killing and not an accident. Highly emotional when arrested, he confessed forthwith, expressed regret, and declined to explain his reasons for killing Fischer beyond saying that it was “over something that has been going on for a while.”
He was charged with first-degree murder. The court appointed a psychiatrist named Sadashiv Parwatikar to evaluate his fitness to stand trial. Parwatikar concluded that Wilson was unfit — that he would be unable to assist his lawyer because the only details that he could provide of the killing were details of the imaginary Catholic conspiracy.
That was in January 2004. Five months later, after Wilson had spent most of the interim period in a mental hospital receiving medication (Olanzapine, an antipsychotic drug) for what the hospital diagnosed as a delusional disorder (Parwatikar had diagnosed Wilson as schizophrenic), a psychiatrist at the hospital pronounced Wilson fit to stand trial.
In August, the month before the trial began, Andrew Schnack, the lawyer whom Wilson’s mother had hired to represent him, wrote and then phoned Parwatikar asking him to testify at the trial about whether Wilson had been insane when he killed Fischer. Parwatikar replied that a fitness evaluation and a sanity evaluation are not the same thing and reminded Schnack that he had done only the former for Wilson. But, pressed by Schnack, Parwatikar said he could render an opinion on Wilson’s sanity at the time of the killing but added that an effective insanity defense would require testimony by a second expert as well, someone who would perform a sanity evaluation of Wilson.
*350Sehnack didn’t retain a second expert and ignored Parwatikar (beyond giving him treatment reports from Wilson’s stay at the mental hospital and a tape of the 911 call) until a few hours before Parwatikar testified, when at his urgent request the lawyer agreed to talk to him.
Parwatikar testified that Wilson was a paranoid schizophrenic who had killed Fischer under “the pressure of the delusions.” Concerning the remorse that Wilson had expressed moments after the killing, Parwatikar testified, unhelpfully to Wilson, that it was like a mother whose child runs into a busy street and she hits the child in anger at the child’s recklessness and only later feels sorry for having done so. Parwatikar acknowledged on the stand having interviewed Wilson only to determine his fitness to stand trial and not his mental state at the time of the killing. Although Wilson’s mentation was now much improved as a result of his treatment in the hospital, Parwatikar had, he acknowledged, not reinterviewed him.
Parwatikar was taken apart in cross-examination by a skillful prosecutor who forced him to concede that only three paragraphs of his 14-page fitness report concerned Wilson’s mental state when he had committed the murder — the rest of the report was about his fitness when Parwatikar had interviewed him. Parwatikar conceded that his report had expressed no opinion on whether Wilson had been sane when he killed Fischer. He conceded that he had never spoken to the police officers and jail personnel who had seen and talked to Wilson immediately after the murder. He conceded that lawyer Schnaek had told him that he (Parwatikar) had all the information he needed to form an opinion on Wilson’s sanity when he had killed Fischer. He conceded that he had formed his opinion of Wilson’s sanity before listening for the first time, on the morning of his testimony, to the tape of Wilson’s statement to police on the day of the shooting. He even conceded that Wilson had been legally sane when he called the police dispatcher.
The prosecutor’s cross-examination of Parwatikar set the stage for a powerful closing argument in which the prosecutor dubbed the psychiatrist’s theory of Wilson’s mental state “light-switch sanity”: “the notion that at one moment in time, one instant in time a person is insane, taking the life of a wonderful human being; the next moment being sane, thereby, evidently, if I hear it right, entitling this man to be found by you not guilty.”
The prosecutor emphasized the limited nature of Parwatikar’s investigation:
Dr. Parwatikar, who’s expressed a point of view to you and who was retained by the court for another purpose, didn’t even see the defendant to perform that assessment [the sanity assessment]; didn’t ask him one question specific to that assessment; did not interview him for the purpose of doing a sanity assessment; didn’t write him; didn’t even pick up the phone. And the evidence tells you that “ain’t good enough.” That isn’t even close to “startin’ to be good enough.”
Imagine somebody coming into the hospital unconscious, blue, and the medical staff looks at him, the doctor looks at him. Person is unconscious, turned blue. “All right. I’ve seen enough, examined him. He is not in any cardiac distress.” Leaves the room. Pretty soon the medical staff revives him or awakens him [the reference is to the restoration of Wilson’s fitness to stand trial by the mental hospital to which he was sent after the murder], nurse comes in, asks the doctor. “Hey, he is awakened. Do you want to examine him. Do you want to talk to him?” “Na, he’s *351awake.” Does that sound like good medical practice? Does that sound like a thorough approach?
A man’s life — a man’s life has been taken. And against that backdrop, is that sufficient to persuade a reasonable person that a sufficient investigation into his sanity has been done? No.
The prosecutor pointed out that his expert witness, Dr. Henry, who had opined that Wilson was sane when he committed the murder, had interviewed Wilson twice. The prosecutor asked the jury rhetorically “why it’s okay not to talk to someone [i.e., Wilson] when ... they are even in better shape than they were before when you tried to talk to them and you couldn’t get any information from them about what happened on the day of the offense. Why you would decide consciously not to go back and talk to that person and try to learn more heaven knows, but it does tell us something about the quality of that opinion [Parwatikar’s opinion on Wilson’s sanity] when you folks [the jurors] come into judgment.”
Parwatikar attested in an affidavit submitted in the state postconviction proceedings that “the prosecutor was very effective in his cross-examination by pointing out the difference between a fitness examination and a sanity examination. The credibility of my testimony, in my opinion, was diminished by the fact that I did not re-exam Mr. Wilson for an evaluation of his sanity at the time of the crime.... I believe, if my opinion had been bolstered by a second expert, there is a great likelihood that the jury, presented with convincing evidence of insanity at the time he committed the offense, would have voted not guilty by reason of insanity.” Parwatikar is not an expert on jurors’ reactions to evidence, but his concerns echo People v. Nichols, 70 Ill.App.3d 748, 27 Ill.Dec. 21, 388 N.E.2d 984, 989 (1979), where we read that it’s “crucial to [a] defendant’s insanity defense to have an examination conducted with respect to his sanity at the time of the offense,” and that a fitness evaluation is not an adequate substitute because “insanity as a defense differs markedly from fitness to stand trial.” See also People v. Kegley, 175 Ill.App.3d 335, 125 Ill.Dec. 42, 529 N.E.2d 1118, 1123 (1988). The Supreme Court has said in like vein that “when a defendant demonstrates to the trial judge that his sanity at the time of the offense is to be a significant factor at trial, the State must, at a minimum, assure the defendant access to a competent psychiatrist who will conduct an appropriate examination and assist in evaluation, preparation, and presentation of the defense.” Ake v. Oklahoma, 470 U.S. 68, 83, 105 S.Ct. 1087, 84 L.Ed.2d 53 (1985); see also Schultz v. Page, 313 F.3d 1010, 1017-19 (7th Cir.2002); Dando v. Yukins, 461 F.3d 791, 798-99 (6th Cir.2006); Powell v. Collins, 332 F.3d 376, 395-96 (6th Cir.2003); Ford v. Gaither, 953 F.2d 1296 (11th Cir.1992); People v. Kegley, supra, 125 Ill.Dec. 42, 529 N.E.2d at 1120-23. Parwatikar neither conducted an appropriate examination nor assisted meaningfully in evaluation, preparation, and presentation of Wilson’s insanity defense — the reason being the insouciance of Wilson’s lawyer, Schnack.
Schnack may have had reasons for his apparent carelessness, though there is no evidence that he did. Maybe he thought that the more Parwatikar delved into the question of Wilson’s sanity at the time of the murder the more skeptical he might become that Wilson had been insane. But that would not explain Schnack’s failure to heed Parwatikar’s suggestion to hire a second psychiatric expert, or his failure to meet with Parwatikar to discuss the latter’s testimony until just hours before he testified.
*352Another questionable feature of Schnack’s representation of Wilson was his failure to interview the members of Wilson’s family, who had observed Wilson’s mental deterioration over a period of years. The bare facts of his bizarre behavior were adequately conveyed to the jury by Parwatikar’s testimony, but as the Supreme Court has pointed out, “making a case with testimony and tangible things ... tells a colorful story with descriptive richness.... Evidence thus has [persuasive] force beyond any linear scheme of reasoning, and as its pieces come together a narrative gains momentum.... A syllogism is not a story, and a naked proposition in a courtroom may be no match for the robust evidence that would be used to prove it.” Old Chief v. United States, 519 U.S. 172, 187-89, 117 S.Ct. 644, 136 L.Ed.2d 574 (1997). Testimony by Wilson’s family would have made his insanity more palpable to the jury.
Especially because of the severity of the penalty that Wilson was facing, Schnack should have done more: should at least have interviewed the family members, spent more time with Parwatikar discussing the latter’s forthcoming testimony, and either have asked Parwatikar to reinterview Wilson or retained a second expert, or done both.
A more difficult question is whether better representation would have been likely to change the verdict. The prosecutor conceded that Wilson had been mentally ill when he killed Fischer, and under Illinois law this meant that the jury was being asked by the prosecution for a verdict of “guilty [of first-degree murder] but mentally ill.” 720 ILCS 5/6 — 2(c). To obtain an acquittal on grounds of insanity Wilson would have had to prove by clear and convincing evidence that his mental illness had prevented him from appreciating the criminality of his act. 720 ILCS 5/6-2(a), 2(e). That might seem a tough row to hoe, especially in a murder case; one might expect jurors to worry that an acquittal on grounds of insanity, even though it would not preclude (and indeed would require) a civil commitment, would let the defendant walk as soon as he could find a psychiatrist willing to declare him cured. Wilson got a verdict of guilty but mentally ill and maybe he had no realistic hope of a verdict of not guilty by reason of insanity, no matter how good his lawyer.
But a substantial body of empirical research finds that the enactment of “guilty but mentally ill” laws (laws allowing the jury to enter a verdict of guilty together with a finding that the defendant was mentally ill when he committed the crime), contrary to intuition, does not reduce the incidence of “not guilty by reason of insanity” acquittals. Ingo Keilitz et al., The Guilty but Mentally III Verdict: An Empirical Study pp. 14-15 (National Center for State Courts 1985); Gare A. Smith & James A. Hall, “Evaluating Michigan’s Guilty But Mentally III Verdict: An Empirical Study,” 16 U. Mich. J.L. Reform 77, 92-93,100-04 (1982); Ames Robey, “Guilty But Mentally III,” 6 Bulletin of Am. Acad, of Psychiatry & L. 374, 380 (1978); but cf. R.D. MacKay & Jerry Kopelman, “The Operation of the ‘Guilty but Mentally III’ Verdict in Pennsylvania,” 16 J. Psychiatry & L. 247, 248-50, 259-61 (1988). The advent of the “guilty but mentally ill” verdict may actually have increased the number of verdicts of not guilty by reason of insanity by increasing the incentive of defendants to plead insanity in states that make an insanity plea a prerequisite to such a verdict. Christopher Slobogin, “The Guilty but Mentally III Verdict: An Idea Whose Time Should Not Have Come,” 53 Geo. Wash. L.Rev. 494, 507 (1985).
The numerous critics of the guilty but mentally ill verdict emphasize that the ac*353tual disposition of the convicted person is usually the same as under a standard verdict; the defendant will not be released earlier, and will receive no more psychiatric treatment in prison, than a prisoner convicted without any finding of mental illness. Henry H. Fradella, “From Insanity to Beyond Diminished Capacity: Mental Illness and Criminal Excuse in the Post-Clark Era,” 18 17. Fla. J.L. & Pub. Policy 7, 30-31 (2007); Jennifer S. Bard, “ReArranging Deck Chairs on the Titanic: Why the Incarceration of Individuals with Serious Mental Illness Violates Public Health, Ethical, and Constitutional Principles and Therefore Cannot be Made Right by Piecemeal Changes to the Insanity Defense,” 5 Houston J. Health L. & Policy 1, 37-40 (2005); Maura Caffrey, Comment, “A New Approach to Insanity Acquittee Recidivism: Redefining the Class of Truly Responsible Recidivists,” 154 U. Pa. L.Rev. 399, 418-20 (2005); Robert D. Miller, “The Continuum of Coercion: Constitutional and Clinical Considerations in the Treatment of Mentally Disordered Persons,” 74 Denver U.L.Rev. 1169, 1186-87 (1997); American Bar Association, Criminal Justice Mental Health Standards § 7-6.10, p. 394 (1989); Lynn W. Blunt and Harley V. Stock, “Guilty but Mentally III: An Alternative Verdict,” 3 Behavioral Sciences & the Law 49, 63-64 (1985). In contrast, acquittal by reason of insanity results in civil commitment, and should the defendant recover his sanity he would be entitled to be released. So there can be a good deal at stake in the jury’s choice between a verdict of guilty but mentally ill and an acquittal by reason of insanity, especially in a case such as this, in which the verdict of guilty but mentally ill resulted in a 55-year prison sentence.
A more telling reason to think that Wilson wasn’t harmed by his lawyer’s lapses might seem to be that the evidence that Wilson failed to appreciate the criminality of his criminal act was weak. It has never been suggested that he thought he was killing Fischer in self-defense or thought he had any other legal justification for the killing. The argument rather is that he was “out of his mind” when he did it — that as Wilson’s opening brief puts it, “Fischer unknowingly exacerbated Wilson’s delusions by demanding that he leave the perceived safety of his home and threatening to fire him if he refused to do so. Wilson’s delusions, exacerbated by conflict and fear, prevented him from understanding reality until the removal of that exacerbating influence.” The proposition that he was so insane that he could not “understand reality” (as if for example he had thought he was an elf shooting a bow and arrow at an ore) is inconsistent with his behavior immediately before the killing (when he placed a loaded gun in his pocket while waiting for Fischer to ring the doorbell) and immediately after (when he made the 911 call).
The more plausible inference is that although Wilson knew he was committing a crime under Illinois law he could not prevent himself from doing so — he was acting “under the pressure of the delusions,” as Dr. Parwatikar put it. It used to be the law that a defendant was entitled to an acquittal by reason of insanity if he “lack[ed] substantial capacity ... to conform his conduct to the requirements of law,” Ill.Rev.Stat.1984, ch. 38, ¶ 6-2(a), and so “if it be shown the [defendant’s] act was the consequence of an insane delusion, and caused by it, and by nothing else, justice and humanity alike demand an acquittal.” Hopps v. People, 31 Ill. 385 (1863); see also People v. Scott, 148 Ill.2d 479, 171 Ill.Dec. 365, 594 N.E.2d 217, 246 (1992). But in 1995 Illinois struck from the insanity defense inability to conform one’s conduct to the law’s requirements.
*354Yet as then-Judge Cardozo had explained many years earlier, an insane compulsion can negate a person’s meaningful appreciation of the wrongfulness of his act. “A mother kills her infant child to whom she has been devotedly attached. She knows the nature and quality of the act; she knows that the law condemns it; but she is inspired by an insane delusion that God has appeared to her and ordained the sacrifice. It seems a mockery to say that, within the meaning of the statute, she knows that the act is wrong. If the definition propounded by the trial judge is right, it would be the duty of a jury to hold her responsible for the crime. We find nothing either in the history of the rule, or in its reason and purpose, or in judicial exposition of its meaning, to justify a conclusion so abhorrent____We hold therefore that there are times and circumstances in which the word ‘wrong,’ as used in the statutory test of responsibility, ought not to be limited to legal wrong.... Knowledge that an act is forbidden by law will in most cases permit the inference of knowledge that, according to the accepted standards of mankind, it is also condemned as an offense against good morals. Obedience to the law is itself a moral duty. If, however, there is an insane delusion that God has appeared to the defendant and ordained the commission of a crime, we think it cannot be said of the offender that he knows the act to be wrong.” People v. Schmidt, 216 N.Y. 324, 110 N.E. 945, 949 (1915). If God commands you to kill, you could hardly be thought to “appreciate the criminality” of your conduct even though divine command is not a defense recognized in the criminal code. See also People v. Serravo, 823 P.2d 128, 139-40 (Colo.1992); State v. Crenshaw, 98 Wash.2d 789, 659 P.2d 488, 494 (1983).
And so what has been called the “deifie decree” exception, e.g., People v. Serravo, supra, 823 P.2d at 139; State v. Potter, 68 Wash.App. 134, 842 P.2d 481, 488 (1992), entered the law. It is not literally applicable to the present case. Wilson’s delusions had a religious slant, but he didn’t think he was acting on a direct command from God when he killed Fischer, or even on an indirect one. But to distinguish between “deifie” and all other delusions and confine the insanity defense to the former would present serious questions under the First Amendment’s establishment clause, and it is notable therefore that Judge Cardozo placed his emphasis on a defendant’s inability to appreciate his act as being morally wrong, whatever the source of his moral beliefs. Convinced that he was the victim of a vast conspiracy — that his persecutors, including his boss, were infiltrating his home in order to frame him for the crime of child molestation, and that if he left the state he could well face catastrophe on his return — Wilson may have thought, at the moment he killed Fischer, that he was doing a morally justified deed.
With the exception of People v. Kando, 397 Ill.App.3d 165, 337 Ill.Dec. 28, 921 N.E.2d 1166 (2009), the only Illinois “deifie decree” cases we’ve found were based on the now-abolished compulsion component of the insanity defense, People v. Wilhoite, 228 Ill.App.3d 12, 169 Ill.Dec. 561, 592 N.E.2d 48, 55-58 (1991); see also People v. Baker, 253 Ill.App.3d 15, 192 Ill.Dec. 564, 625 N.E.2d 719, 722-30 (1993); People v. Garcia, 156 Ill.App.3d 417, 108 Ill.Dec. 904, 509 N.E.2d 600, 603-05 (1987), although Wilhoite cites Judge Cardozo’s opinion in the Schmidt case approvingly. People v. Kando, however, was decided after the change in the statute; and it cited the Wilhoite and Baker opinions approvingly. 337 Ill.Dec. 28, 921 N.E .2d at 1196. It is a reasonable inference that the Supreme Court of Illinois would approve an insanity defense along the lines of Judge Cardozo’s opinion — which has lost *355none of its intellectual power by the passage of years — and so it would be available to Wilson.
Baker indeed is rather similar to the present case. The “defendant said that he got into an argument with his father over a ‘method of religion’ and became upset. He went to his bedroom where he retrieved a gun, which belonged to his brother Andre, from a locked toolbox in his room. He returned to his father and told him ‘the father dies before the son.’ His father went for his throat and he shot at his father. His father started to run and he fired several more shots at his father who then fell in a utility room. He turned to his mother whom he shot and then stabbed. Afterwards, he returned to his father and stabbed him. After he stood there and looked at them for awhile, he got into his Camaro intending to go to Las Vegas.” 192 Ill.Dec. 564, 625 N.E.2d at 722. The defendant was diagnosed as schizophrenic, and the prosecution as in this case used evidence of the defendant’s “normal” post-killing behavior (the evidence of his driving to Nebraska, presumably in an effort to escape apprehension, and the testimony of the detectives who received his confession two days after the killings that he appeared normal during the interrogation) to argue that he was not insane. Id. at 729. Yet the court directed that the defendant be acquitted by reason of insanity, and in so ruling noted that the psychiatric witnesses had each interviewed the defendant a number of times.
Lawyer Schnack and Dr. Parwatikar were apparently unaware of the “deific decree” cases and this drove Parwatikar to embrace, to Wilson’s damage, the “light-switch” theory, as the prosecutor called it: Wilson was sane when he put the gun in his pocket, insane when he killed Fischer, sane again when he dialed 911. A further telling point that the prosecutor made to the jury was that since it had taken the psychiatrists at the mental hospital where Wilson was confined four months to restore him to sanity, or at least sanity enough to enable him to be tried, how could it have taken only minutes for him to recover his sanity after shooting Fischer if he had been insane when he shot him? Doubtless the reality is that Wilson was insane throughout; but insane persons have lucid intervals, as pointed out in our recent case of Holmes v. Levenhagen, 600 F.3d 756, 760-61 (7th Cir.2010).
For Parwatikar (or another expert) to have interviewed Wilson after the prosecutor’s psychiatrist had done so might have bolstered the latter’s testimony that Wilson had been sane when he killed Fischer. Might — but by not reintérviewing Wilson, Parwatikar had invited the prosecutor’s analogy of Parwatikar to the doctor who doesn’t bother re-examining the now-conscious patient, and the prosecutor’s further argument that Parwatikar’s failure to reinterview Wilson should persuade the jury to reject all of his testimony — his failure to perform a second examination, according to the prosecutor, showed that his testimony was not medically sound.
Schnack should have instructed a psychiatrist, whether Parwatikar or another one, to interview Wilson after he had been given antipsychotics and so could speak coherently about the events surrounding the shooting, as he had been unable to do when interviewed by Parwatikar.
Remember too that Parwatikar was the witness who narrated the history of Wilson’s delusions because Schnack did not put any of Wilson’s family members on the stand. With Parwatikar’s credibility grievously damaged on cross-examination, the jury may have thought that his narrative, though not challenged by the prosecutor, should also be discounted, and there*356fore that Wilson may never have been as crazy as the narrative suggested.
Given the gravity of the charge against Wilson and the ample evidence that he was driven to kill Fischer by an insane delusion, we conclude that Schnack’s assistance to Wilson fell below the minimum professional level required (by interpretation of the Sixth Amendment) of a lawyer representing a murder defendant; the Illinois courts were unreasonable to think otherwise. Wilson’s imperative need for better and more timely preparation of Parwatikar (the attempt to prepare him hours before he testified came too late), for a reinterview of Wilson by Parwatikar, for acceptance of Parwatikar’s advice to hire another expert, and for putting the lay witnesses to Wilson’s mental deterioration on the stand, compels our conclusion. The only reasons the state courts gave for thinking Schnack’s representation adequate was that Parwatikar was a distinguished psychiatrist and that Schnack “questioned Parwatikar in a cogent manner, enabling Parwatikar to come across in a favorable light.” Unmentioned was that Parwatikar had told Schnack that his testimony alone would not be adequate, that he was correct, and that his credibility was demolished on cross-examination.
Whether Schnack’s failure to provide competent assistance prejudiced Wilson — robbed him of a reasonable chance of acquittal on grounds of insanity — is a closer question, quite apart from the niceties of insanity law that we have discussed. Remember that not only is the burden of proving insanity on the defendant but it is a heightened burden — proof by clear and convincing evidence, rather than just by a preponderance of the evidence. We are hesitant therefore to conclude that it was unreasonable for the Illinois courts to conclude that Wilson was not deprived of his constitutional right to effective counsel. But unreasonableness— the normal standard of review in federal habeas corpus proceedings under the Anti-terrorism and Effective Death Penalty Act of applications of federal law by state courts, 28 U.S.C. § 2254(d); see Bell v. Cone, 535 U.S. 685, 698-99, 122 S.Ct. 1843, 152 L.Ed.2d 914 (2002); Timberlake v. Davis, 409 F.3d 819, 824-25 (7th Cir.2005) — is not the standard applicable to this case, because the Illinois courts have made no finding on whether Wilson was prejudiced by the subpar representation of him by his lawyer at trial. They found only that his representation was adequate. And when there is no state court finding on the issue of prejudice, our review is plenary. Rompilla v. Beard, 545 U.S. 374, 390, 125 S.Ct. 2456, 162 L.Ed.2d 360 (2005) (“because the state courts found the representation adequate, they never reached the issue of prejudice, and so we examine this element of the Strickland claim [ineffective assistance of counsel] de novo”); Wiggins v. Smith, 539 U.S. 510, 534, 123 S.Ct. 2527, 156 L.Ed.2d 471 (2003) (“in this case, our review is not circumscribed by a state court conclusion with respect to prejudice, as neither of the state courts below reached this prong of the Strickland analysis”); Jones v. Ryan, 583 F.3d 626, 640-41 (9th Cir.2009).
But in its recent grant of certiorari in Harrington v. Richter, - U.S. -, 130 S.Ct. 1506, 176 L.Ed.2d 108 (2010), the Supreme Court asked the parties to address the following question: “Does AED-PA deference apply to a state court’s summary disposition of a claim, including a claim under Strickland v. Washington, 466 U.S. 668, 104 S.Ct. 2052, 80 L.Ed.2d 674 (1984)?” The lower court had held that because the state courts had denied post-conviction relief without any statement of reasons, the federal courts should apply the standard of reasonableness without *357giving any deference to the state courts’ denial of relief. Richter v. Hickman, 578 F.3d 944, 951 (9th Cir.2009) (en banc). Unless and until the Supreme Court rejects the no-deference approach, however, we are bound by it because it is the approach the Court took in Rompilla and Wiggins. The dissenting judges in Richter v. Hickman did not question the majority’s decision to determine reasonableness de novo. See 578 F.3d at 977-78. Nor did the petition for certiorari. The Supreme Court raised the question of the standard of review on its own initiative.
Wilson was entitled to an evidentiary hearing on the issue of prejudice, and so the judgment of the district court must be vacated and the case remanded. Should the state have evidence that the lawyer’s representation was adequate despite what we have said in this opinion — Wilson’s lawyer might for example have had a tactical reason for not asking Parwatikar to reinterview Wilson — the district court should consider that evidence, treating our determination of the inadequacy of the lawyer’s representation as tentative.
Vacated and Remanded.