system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why can cows and other animals constantly produce milk but humans cannot?
gpt
All female mammals only produce milk after being pregnant. If you're thinking of dairy cows, they "constantly" produce milk because they are constantly being inseminated, going through pregnancy, giving birth, then having their babies taken away (and killed if male), and being artificially milked for human consumption. Then the cycle repeats until they aren't seen as being productive anymore, then they're killed. The same thing *could* be done to human women, but it would break a whole bunch of different laws (plus, you know, ethics) ....