system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why you should put pasta into boiling water and not throw it into cold and boil them together?
gpt
The rate at which the pasta absorbs water depends on the water's temperature.

If you add pasta to cold water and then heat it, the rate at which the pasta soaks up water will change depending on how much water you put in the pot, how high you turn the burner on, and other variables. This makes it hard to time it and get a predictable result.

If you add it to boiling water, the water is always at the same temp through the cooking process, and you get very predictable results.

tl;dr: It's easier.