>>11321387because humans are cognitively limited and act on the definition of a future calculation based on their knowledge of the phenomena they are trying to predict.
it is of course a botched prediction, because even if you are correct and you obtain the expected outcome, you still really don't know what you are doing, meaning you could reapply the same process to the "same phenomena" and one day you might obtain a spectacular failure, which is different from your previous experience and you won't know why.
so your ability to predict stuff is influenced by the amount of stuff you correctly know, emphasis on correct, your capacity to apply it to a real context and the ability to extrapolate meaning from the result and integrate it correctfully in the original model.
this clashes with the limitations of the human brain and with how we do process and percieve reality.
if you define a genius as a person which is more skilled at noticing patterns and is more interested in acquiring tools to analyze reality, it is not hard to imagine that geniuses might see reality differently, interact with it in a nonstandard way and test things in a way it might seem bizarre.
this can be enough to warrant a "mental illness" classification of their behaviour or the behaviour itself can develop and spiral into mental illness.
having said that, there is no direct correlation or inverse correlation between genius and mental illness.
also because one of the ways psychological "illness" is based from a functional (can this behaviour work, are you functioning properly) and statistical point: you have a normal functioning behaviour when you interact with a society, but society itself is "normal" only when considered in a technological, historical and cultural frame, and so our definition of illness might change (not all of them, schizophrenia is kinda constant).
