>>54733204tell your friend to look up the difference in human female pregnancies and most mammal pregnancies
human fetuses are parasites that treat their hosts exponentially worse than their mammalian relative's fetuses do; human fetuses have evolved to nearly take over the host body at the benefit of massively increased offspring viability and intelligence and the cost of draining the host (and with a substantial threat to the host's life; look up the mortality rates prior to modern medicine).