Nobody invented weight classes to protect the feelings of small men. They were invented by people who got tired of writing incident reports, obituaries and condolences. The logic is not moral, it is anatomical. A well conditioned fighter at sixty kilos who steps in against a hundred kilo opponent is not an underdog story waiting for a soundtrack. He is a set of predictable injuries with a ticket price attached. Skill compresses the gap. Mass decides what happens when skill has a bad night. Divisions exist because the sport learned, expensively, that courage does not distribute impact force. Business borrowed...