Whether it's Steve Jobs, the myriad of other successful people, or the many I have known personally, they routinely demonstrate justifiable irrationality. Fantastically contrary to a rational, calculating, literal thinker, I have come to understand even sometimes apparently asinine irrationality is one of the most critical components of advancement. As it is that conflict is the core phenomenon of which evolution is the symptom, it is also illogical irrationality that allows the boundaries to be pushed far enough in a direction that we are granted the amazing things that happen when the one time in a million chance occurs and the impossible actually becomes possible.
Regrettably, this is also the function underlying the existence for war, strife, pain, and suffering. This is the universal balance, and the price we all pay.
By no means exclusively, but with irrationality at the root of all great successes, should we refer to them as genius, or insane?