"We spend a lot of time talking about games and films, but a much more useful corollary is music. The processes are spookily similar. Creators devise an experience, and commit it to code. The code then sits there, lifeless, until a performer picks it up. Then, through a complex tool which requires substantial manual dexterity to master, the performer interprets the experience the creator devised. No two people will play the code the same way. Some players will perform better than others. Some will get stuck and give up before the end."