Hypothetically, what would convince you that Trump isn't a benevolent 3d-chess playing genius business god? Indictment? Tax returns? IQ test result? Admission on his death bed?

See, I get the feeling nothing would. You NEED to believe, or your world would break. And yes, there are surely symptoms of the same on the "other" side, but no, it isn't exactly the same. Extraordinary claims require extraordinary proof, and a claim that somebody, anybody, is a benevolent 3d-chess playing genius business god, especially while talking, acting and having the background of allegations as he does, definitely qualifies as extraordinary.

The problem for the pro-Trump side of the debate is, that he can certainly be a successful businessman with above average intellect, and all the criticisms against him can still be valid. On the other hand, to believe all his moves are part of a grand scheme, where he's quietly puppet-mastering everything behind the facade knowing wtf he's doing, requires him to be all that. Occam's razor, folks.

What would convince me then? Evidence. Not anecdotal, not circular logic, the hard kind. Let's hear him, just once or twice say something smart unscripted, surely he must be capable of that. Lay out his plans or opinions regarding some issue, that clearly demonstrates deep understanding. Show his tax records for the past years, if he's been steadily successful I'll give him the benefit of the doubt and not think he's in it just as a publicity stunt to boost his businesses.