[Nicholas The Slide]

here is a hypothetical situation.

You are an electrician. this lady wants to find out whick switch turns on the bulb in the attic bulb. there are 3 switches. the switches are in the basement and the bulbs are in the attic, the bedroom, and the living room, so you cant see which bulbs are on from the basement. the lady is really pissy and wil only let you go upsiatrs once. how can you tell for certian which switch turn on the attic bulb?

note: there is a way to do it with no doubt as to which switch is on. and killing her is not an option.