The rules of soccer (or football, or more specifically "association football") are, as in every sport, ever changing and evolving. Substitutions, the offside rule, methods for breaking ties: over time, the organizations (first the FA, then the International Football Association Board) governing the sport have made changes as the need arose. Many of those rules, the ones so ubiquitous in the sport today, are taken for granted; to wonder where they originated, or how the game itself started is beyond the concern of most fans.