Your flashlight must have low batteries, because it isn't very bright. The room appears to be quite large and empty. You can barely make out what appear to be walls around the room.
As you turn around to get a better view of the room you realize there is a six foot tall mirror floating behind you. A beautiful woman appears in the mirror and says "I am the knower of all things. I will grant you the answer to one question"
What do you do?