Faolyn
(she/her)
That was entirely my point--some things can be expected to exist in a particular area. In this case, the area was a sickroom where a person had been left to recover, thus, jugs, cups, and bowls for water and cleaning wounds, jars for medicines and herbs, and so forth.That's not an accurate description of what happens.
What happens is that the player rolls well enough, and grabs the cup that others didn't particularly notice and wasn't explicitly described before.
We, as GMs do NOT generally describe scenes in excruciating detail. We give rough sketches. Like, when the PCs enter a library, we do not detail EVERY title of every one of hundreds of book on the shelves. We don't note the precise length of every candle in every candlestick - or even the existence of every candlestick.
There's a lot of unspecified, assumed set dressing. It isn't that the cup "appears", it is that the cup is now known to exist as part of that previously unspecified stuff in the space.
Pemerton said that he (or whoever the GM was) just didn't mention a vessel; therefore, the player had to roll to see one.