Psychiatry cannot detect fakes

The Wash. Post reports:

Welner determined that Mitchell, who sang through his court proceedings and spouted pseudo-religious gibberish, was a skilled con man who was largely faking his delusions.

“Psychiatry is far less able to detect faking than it asserts,” Welner said in an interview this week. “Experience teaches me that an ounce of fact is worth a pound of expertise.”

So if psychiatry cannot detect fakes, how did he determine that Mitchell was a fake? Welner seems to be admitting that he cannot back up what the feds paid him to assert in court.