Wikipedia defines common sense as “knowledge, judgement, and taste which is more or less universal and which is held more or less without reflection or argument”
Try to avoid using this topic to express niche or unpopular opinions (they’re a dime a dozen) but instead consider provable intuitive facts.
presumably they mean using something besides your body heat to melt it
Ah, I guess the way it was worded that could be it.
I do know tucking some under your coat in a container is one thing you can do, if you’re in a desperate situation. At best that slows down the rate of heat loss, though.