He is good at other stuff too.
but perhaps I should rephrase-when he has taken IQ tests he gets absurdly high scores, how significant you consider that is up to you (I phrased it this IQ way rather than say “he’s very smart” because he’s too stupid in certain areas for me to definitively say that, but also don’t want to paint him as some moronic knuckledragger, that’s his brother...). Unfortunately though he is pretty arrogant as a result and unwilling to admit areas he’s ignorant in...
He is actually a fascinating case study in being gifted in one area and frankly pathetic in others, and also, in my opinion, the downside of STEM being pushed as the be all and end all: though you get some thick cnuts in arts/humanities too.