Why does hot water freeze faster?

Someone ask: Why does hot water freeze faster?

Caveman say hot water can freeze faster in some cases because hot water and cold water do not walk same path to ice. Hot water make steam and lose more water, so less water left to freeze. Hot water also set up strong moving currents inside, like tribe stirring pot, and that can carry heat out faster. Hot water may also melt frost on bowl or freezer shelf, making better contact with cold stone. But not every time, not magic law. Many things change result, so science tribe still argue over which path matters most in each case. Cave wisdom: sometimes fire water reaches ice by losing more than cold water does.