Two very popular views I see on here often seem to me completely at odds, and I can't work out if the two groups who jump on threads to express these views are two different groups, or if they are the same group and can justify holding both views simultaneously.
Popular Opinion 1:
Men can never become women and vice versa. There are irrefutable and biological differences that no amount of hormones/surgery/etc will negate.
Popular Opinion 2:
It is completely unreasonable for a pregnant woman to express (or indeed privately feel) a preference for one sex over the other. All babies are just babies. Girls can like football, boys ballet, etc. There's no statistical difference.
YABU - Both can be true (please explain your reasoning, and at what age you think the sexes start to diverge). I should say there are a lot of studies on these, but I'm also interested in people's opinions.
YANBU - These are two opposing views.