https://www.nationalgeographic.com/science/article/brains-of-gay-people-resemble-those-of-straight-people-of-opposite-sex (brain structure)

https://www.karger.com/Article/Abstract/496996 (X/XY)

https://en.wikipedia.org/wiki/True_hermaphroditism (Vagina by birth)

The biologists are confused as to whether to define a woman by presence of vagina-by-birth, brain structure, or the presence of double-X/XY chromosome, because if exploits and biological aberrations weren't a thing kikes wouldn't even be a thing.

For general purposes, however, the optimal definition is the one which maximises E.F. which is vagina-by-birth.

Also 2+2 ranges from anywhere between 3 and 5 because it's 2 (0dp) + 2 (0dp). This is why there was one Romanian Math professor who said that "2+2=5" is worse than the Soviet Union: because nobody in the SU uses 0dp trash. If you add 2 0dp numbers you deserve to get a different result from that derived from using 2dp numbers.