system
Given the following post, respond as if you're commenting on Reddit:
human
If you put a candle next to a mirror, does the light in the room get twice as bright?
gpt
Most of the answers so far seem to be thinking of a candle in an open space or replacing some of that open space with a mirror. But if you have a room the walls of the room will absorb some light, and scatter some light back into the room. If you replace some portion of a wall with a mirror, then you can expect more light to be scattered back into the room than before, though exactly how much is probably a complicated answer with "twice" being some sort of idealized limit.