iserith
Magic Wordsmith
To clarify, I wasn't trying to suggest rolling dice is important for it's own sake.
Right, I didn't take it that way. I took it mean all of these things you go on to helpful point out that are a subset of that:
Rather, the chance introduced by the dice may useful as a tool. For example, rolling a die introduces a degree of impartiality to the knowledge check, and at some tables that emphasize the "DM as referee" style that impartiality maybe inherently valued. As another example, if the DM hadn't actually created the setting information requested, a check can be useful to determine whether the DM needs to improvise on the spot (or how much they need to improvise at tables that allow non-binary check results).
This below is the part that some people are disagreeing over, at least in terms of what does or does not qualify as a meaningful consequence:
Finally, the DM may simply think that it is uncertain whether the character would know the requested information, and want to use a check to resolve that uncertainty. (Depending on the player's intended use for the information, the DM might consider not knowing the info to be a meaningful consequence because it constrains future options, in which case the rules suggest that an ability check would indeed be appropriate.)
I submit that sometimes, as with any action, sometimes there's a meaningful consequence for failure. Others may say that you should always roll (which means it follows there is always a meaningful consequence for failure). Others say don't roll at all (which means it follows there is never a meaningful consequence for failure).
Still others base their position outside of these parameters by saying those rules don't matter, are in error, are taken out of context, or can be dismissed in certain cases.