I think Trumps psychological profile would need more data(for myself) and deeper analysis. I am guessing itsnt correct to judge someone by standards which most men in high profile positions keep pretense of only on surface(take Obama getting Nobel peace prize while bombing and selling more weapons than Bush) becouse when you get maverick like Trump coming along your expectations and predictions based on that surface behaviour are bound to be way off...The only reason you can't understand, and why so many people share your exact sentiment... is because they are still clinging to the "and/or incurious" explanation out of a generous desire to give him some fig leaf of an excuse. Forget "incurious"... forget "ignorant"... The key word here is "pathological". Once you embrace that explanation all the confusion melts away and you will fully understand the lies. He is a pathological liar. He can't stop, won't stop, its a compulsion.