One Roll to Know it All

[Hand_of_Vecna]

And I personally cringe every time a player goes, "Okay, what knowledge skill do I need to roll to know about..." If you as a player can't figure out if Knowledge (The Planes) or Knowledge (Architecture) applies then how would your character know if he's looking at something extra-planar or just a feat of neat engineering? Try one or the other and give me a reason why you think that. Even if it's wrong it might still reveal stuff.

1. Sorry, but your ability to describe things will always be inferior to my character's ability to experience the world with their 5+ senses.

2. I don't have Knowledge X, at least not at the level of many characters.