NBC News Reports on "Healthy and Happy" Transgendered "Jacob"--Aged 5

I'm not doubting that the child's parents say he's happy and healthy. I'm not even doubting that "Jacob," born female, prefers to be thought of as a boy. I do doubt, however, that at such a young age this Kindergartener's gender identity has completely coalesced. (I happen to know of another "Jacob" who identified as a male early on, and who even wore a boy's suit and haircut to her Bat Mitzvah, but who decided some time later that she was, after all, a girl.)