Mpemba effect - Wikipedia, the free encyclopedia
If you allow "Under certain conditions", then for instance: Hot water freezes faster than cold water if you put the hot water in a freezer and keep the cold water on the table. True but so what? If you make the statement with no conditions then it's assumed to be under default conditions.
The reason I'm arguing this is because "under certain conditions" gets dropped with repetition and pretty soon people think hot water freezes faster than cold water as a matter of course. It becomes one of those things that "everyone knows" that isn't true.
It's actually a common enough effect that no one really cares about except as an interesting science problem.