It's a shame that his 1981 plane crash robbed both Steve and the world of the full use of one of the greatest engineering minds that has ever lived. A lot of people who know him personally - and I know of them personally, so it's second-hand corroboration to be clear - say he was never anywhere close to the same after the accident.
You shouldn't imply such things without being willing to share the source. Also, changes in personality do not automatically mean changes in intellect.
Again, while I don't know him personally, I hold in great regard people that do and am simply relaying what they've told me, which is that whatever the nature of the change happened, be it personality or intellect or interests or whatever, it set him on a different path and likely robbed all of us of whatever the fruits of his previous path would have borne.
