@LeviKornelsen@Silverlion I guess I'm not sure what the distinction is, when the particular way I want to implement clue cards implies interaction already.
Since I haven't said it in the thread itself: I see clues as having four statuses in a line:
Unshared (at least one but fewer than all PCs know the clue exists; the purpose of this status is to prevent players from hoarding information to make their own character "seem smart", and thus ensure that reasoning is a group activity)