[Coda]

Pounds versus pounds-force is easy, at least. On Earth, an object of mass x pounds is affected by x pounds-force of gravity (which can also be said "weighs x pounds" which is where the confusion comes in). Fortunately you only need to specify pounds-force when there's an ambiguity (or on tests).

One small advantage of using the Imperial system when cooking: We have a concept of dry volume, which means we can scoop things like flour or sugar into measuring cups and dump it into the bowl. Most recipes using metric use mass, which means you have to use a kitchen scale to measure flour and sugar. Sure, this has the advantage of being more precise because you don't have to worry about whether it's packed or fluffy, but you lose the advantage of being able to compare volumes of dry vs. wet ingredients. ("One cup of milk, one cup of flour, okay, those are equal!" "150g of flour, 150mL of milk... are those equal? I have no idea.")