The High Aldwin
If the player is not playing, the character really isn't doing anything, though.because the player is not playing. I agree that time-keeping is very important in a campaign, but I like the idea that the players decide if their characters will take a week off doing nothing.
Seriously, that isn't to say the player can't decide to have the character take time off to do things, etc. and later on the DM and group can "let time pass" and the character's activities are resolved. When I DM it is entirely up to the player if their character takes time off and does something or nothing.
But the idea that 2 weeks of training (in game) equates to two weeks passing IRL so that player can't play that character is nonsense IMO. That is the point that was being made and I asked for a citation on.