I mean, on the other hand, I could bring you up as an example of the average non-wheelchair person to make the same point.
Did they teach you anything in Statisticians clan about statistics? In real world applications like this, you can't pick someone and say "you're my average", in general, you can't pick even a folk sample, average them together and say "you're my average".
And don't say something to effect "I knew that all along, just checking to see if you were dumb enough to fall for that.", that's falsity.
In any case, if you're above average for a non-wheelchair person that only makes my case stronger.
Are disabled folk smarter? I wouldn't put it at extraordinary (since they can't move all that well, reading is a bigger choice). But you spend more money on them, they most likely aren't as happy, where as, say, normal, healthy human has same opportunities as disabled but can choose to squander them for playing sports (while wheelchair folk can squander them for being bored).
Edited 9/16/2015 04:51:50