Let's also consider syllogisms - a logical argument in which one proposition (the conclusion) is inferred from two others

The classic example is -
If, ….All animals are mortal
and… All humans are animals.
we may safely conclude that…. All humans are mortal.

However it is a misconception and fallacy resulting from incorrect reasoning in argumentation to conclude (either willfully or in ignorance) that because -

……depression is a serious illness which can affect anybody and some people with an autistic spectrum disorder (just like any other person) may have a biological predisposition to depression and may become depressed because of the constant struggle to deal with the world around them.

…….Some well known comedians have been known to suffer from spells of depression

…….Well known comedians like Tony Hancock, Rowan Atkinson, Stephen Fry, Billy Connolly (who have suffered from depression) are therefore 'on The Circle' of autism

I'm sure that Stephen Fry, who has actually been involved in some interesting learning aides for autistic children cartoons to aid autistic children   would be fascinated by your deductive 'reasoning' processes and diagnosis Lizzie.