system
Given the following post, respond as if you're commenting on Reddit:
human
How long would it be possible for a human to survive if buried alive in a coffin?

I am writing a short story, and I would like to make it as realistic as possible. I am curious how long someone could survive being buried alive in a coffin before running out of air or dying of other causes. Bonus question: would they drown or be smothered if it were to rain?
gpt
There was a Mythbusters on this. They found that the coffin collapses instantly when the full 6 feet of dirt is piled on, even when using the strongest steel coffin on the market. Doesn't make for a great short story but that is what happens.