system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why are surgeons allowed to do 20+ hours of surgery in one sitting but truck drivers are strictly monitored as to how much they can drive at a time?

I thought of this after hearing about Sen. Charles Schumer comments in lieu of Tracy Morgan's recent accident. I'm pretty sure truck drivers aren't legally allowed to drive more than 12-15 hours at a time and only after a few days of rest beforehand.
gpt
A 20 hour surgery will often involve a team of surgeons, with breaks in between.

Also, a 20 hour surgery is there because *there is no other choice*. Moving cargo, there's a choice -- the driver can pull over without his cargo dying.