The long arm of Basic D&D:
Gilsdorf: Can you talk about which older editions were most inspirational and what about them did you like or try to incorporate into D&D Next?
Mearls: Basic D&D, the version released in 1981 and assembled by Tom Moldvay, is a big inspiration. It’s a complete game in 64 pages and covers the essence of D&D in a compact package. The original game [OD&D] has the basic concept of an RPG, with the idea of the DM as a combination world builder, storyteller, and umpire. AD&D added more flexibility to characters, 3e created a logical framework of rules, and 4e created a math framework for the game. All of those things are steps forward for D&D and every edition has contributed to this new iteration.
Mearls: "...I think D&D is at its best when the game is about the DM’s rulings rather than the actual rules."
Has he been reading Mythmere's Quick Primer for Old School Gaming?