system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do some lamps and other fixtures require two turns to turn on and off?
gpt
They're 3-way switches, but you apparently did not put a 3-way bulb in the lamp... using a 3-way bulb would allow the lamp to have 3 brightness settings. If you use a standard bulb, it's two turns on, two turns off instead of low, medium, high, off.