Strange, because chess definitely has elements of risk calculation based on your uncertainty. Without a computer, you cannot calculate all the lines ahead, so

Strange, because chess definitely has elements of risk calculation based on your uncertainty. Without a computer, you cannot calculate all the lines ahead, so many decisions come down to trade-offs involving uncertainty. Colloquially, this usually is called "strategy", which involve decisions that are much longer term than calculated tactics, and therefore involve a great deal of uncertainty. Tactics still dominate, but strategy leads to tactics. You're often left making decisions on the basis of, well, maybe if I do this I'll be able to poke my rook through later, but maybe they'll win counterattacking the file I'm leaving.