Let me start by saying that I'm not using the word to degrade the subject of conversation, I'm using it because I barely passed grade 10 biology well over half a decade ago.

But, can someone debunk my theory?
>Gather tens of thousands of co-ed down syndrome peeps
>Put them all in a massive hotel, sharing a room with a member of the opposite sex
>Throw on some Marvin Gaye
>Lower the lights
>Porn plays over every tv in unison

Hear me out, right... If pairs of chromosomes are what make people average and whatnot, with DS homies being a lil iffy because they've got a spare one without a match... Then couldn't you just get them to keep fucking and fucking until one of them pops out a kid with like, double the downs? If they had a pair, they'd be the next step forward in human evolution. They're already likely to pop out another of the sort, what's the chance of that increased likelihood developing another anomaly?