It was mentioned on a thread around here that it can be hard at times to find uses for Lore skills during daily gameplay, and that left me thinking. The Nazi-punching funfest of Spirit of the Century had knowledge skills work in a fundamentally different and interesting way, a way that I feel fits the "worlds without number" feel of the Warhammer 40K setting.
When a user rolls a knowledge skill, unless the GM has a specific reason to deny it (say, the GM already knows that the demon king of Angbar hates the tears of the virtuous), if the roll hits whatever TN is needed, the player states that he knows a fact about whatever his skill is related to, and whatever the player states is then true .
Of course, this is a very open-ended rule, and a GM should use good judgement in all situations to prevent things from getting out of hand, but I tentatively think that such an addition could make knowledge skills a far more flexible tool than they already are.
What thinks you all?