system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What are the reference points for Fahrenheit? If Celsius is based on water freezing and boiling, where in the world did Fahrenheit come from?
gpt
0°F is based on the coldest temperature Fahrenheit was able to consistently recreate in his lab. 32°F is the freezing point of water and 96 is based on the human body temperature the difference between the last two is 64* which is easily markable by halving the distance a few times.

The modern scale is slightly changed and uses the freezing and boiling points of water at 32°F and 212°F as fix points.