Game Mechanics in Tabletop Design

Despite the staggeringly vast variety of games out there in the world they draw primarily from a core set of basic mechanics. Many games which at first seem very different share fundamental design patterns subgames and strategies. What is a "draft " and more importantly what is its true function? Where to rondels come into play? What is the purpose of an arbitrary decision? What does "skill based movement" mean for a game? Are all auctions created equally? Whether you are a player maker or even simply observer of games understanding these core components will provide a surprising degree of insight into their nature.