as it relates to the point about binary sex, i guess it's not really a good comparison. or maybe it is. all zygotes begin as females but may switch later, much like hydrogen fusing into helium. so then it is a good analogy. i don't understand why it would be hard to accept that analogy the more i think about it. we are mostly binary, but with a small degree of spectrum. i don't understand how accepting that fact defeats a movement.