The art of diagnosing with hindsight

How psychiatry works, writes Peter Rhodes.

Anders Behring Breivik who slaughtered 77 people in Norway is a paranoid schizophrenic.

How do we know this?

Because he killed all those people.

But why did he kill all those people?

Because he is a paranoid schizophrenic.

But how do you know he is a paranoid schizophrenic?

Because he killed all those people.

And so on.