I saw this the other day and I was mystified. The circuit has a green and red light bulb, and a green and red switch. Initially, the red switch turns the red bulb on and the green switch turns the green switch on. When both switches are on, both bulbs are on
Here's the catch: When you switch the Red and the Green Light bulb, the red switch still controls the red light bulb and the green switch still controls the green light bulb.
Can anyone explain or diagram this?