It may happen that, during a session, players don't remember the name of a NPC that they met (or, more generally, information about something that happened) during the previous session. Obviously, their PC remembers that information. Conversely, a player may have taken notes about a not so important event that happened several years ago (in game). In this case, it is possible that the PC does not remember it.

**How should the DM manage the discrepancy between the player's memory and their PC's memory**? In the case of 5e, should he have the PCs make Intelligence checks?