But, as per my post upthread about the trees and their leaves, there will always be information that is not narrated by the GM, but that (i) is implicit in what they have narrated, taken together with other established elements of the fiction, and (ii) that a player regards as salient although the GM has not thought of it.Think the original description of the bar should have included how crowded it is
Patrons in bars; leaves on trees; rubbish in alleyways; taxidermists in towns; whatever it might be.
The only way to avoid (ii) is to run such a tight railroad that only the GM gets to decide what is salient.
The only way to avoid (i) is to require the players to ignore the embodied, sensory, volitional nature of their characters, and instead ask the GM for permission to declare actions.