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Also, evolution isn't "complete". It's not done optimising. And sometimes, some things evolve and there just isn't enough evolutionary pressure to remove stuff
by konschubert 5y ago
Also, evolution isn't "complete". It's not done optimising. And sometimes, some things evolve and there just isn't enough evolutionary pressure to remove stuff that does't hurt. Men have nipples.
- koheripbal 5y agoCancer definitely hurts.
- monopoledance 5y ago> Men have nipples. Just sayin', that has little to do with "remove stuff that does't hurt", but the fact that there is very little difference between men and women besides sex steroid levels. In particular, women do not have any genes men don't. The Y-chromosome adds the tiniest modification to gonadal development in embryos and that's it; androgens do the rest. With the right hormone levels, men can develop fully functional breasts; without estrogens, women don't.