"The core concept of (Dungeons and Dragons) is only covered on 2 pages (Of the 1974 White Box rules) by a brief example of how the game is played. Every role playing game published after dungeons and dragons follows this same format: lots of rules and a small example of how the game is played."
A moment later in the film David Wesely, the father of all role-playing games said
"One of the things that I find most telling about it is that it continues to be how they do it. That you just can't seem to describe the game by writing down all the rules. You actually have to have somebody talk you through what it looks like when people are playing it so they can get a feel for the social interaction on on a level that's very hard to describe as just simple, flat statements."