“YOU CAN NOT HAVE A MEANINGFUL CAMPAIGN IF STRICT TIME RECORDS ARE NOT KEPT.”
"Time in the Campaign", AD&D Dungeon Masters Guide (1979), p. 38
Contexto: One of the things stressed in the original game of D&D was the importance of recording game time with respect to each and every player character in a campaign. In AD&D it is emphasized even more: YOU CAN NOT HAVE A MEANINGFUL CAMPAIGN IF STRICT TIME RECORDS ARE NOT KEPT.