The responses to this reddit post make me think that it is a popular belief that holes in pot lids make water boil faster. The claim is that by lowering pressure, the water boils at a lower temperature.
I had always assumed they were there solely for convenience and safety - steam buildup can be a hazard - and that releasing steam would make it take longer to boil. I also don't see the pressure getting high enough to matter, but I don't know how the physics works out.
Is there truth to this claim? Might holes in pot lids make water boil faster?