Post:
You have three switches in one room and a single light bulb in another room. You are allowed to visit the room with the light bulb only once. How do you figure out which switch controls the bulb? Write your answer in the comments before looking at other answers.
Comment:
If this were an interview question, the correct response would be "Do you have any relevant questions for me? Because have a long list of things that more deserving of my precious time than to think about this!
I'm drunk and belligerent to not give a shit about pointless pedentry, but to finally assert that...it doesn't fucking matter. Back when actual humans still liked Google, back before we forgot they technically changed their name to Alphabet, back when their motto was "do no harm," they started interviewing engineers with clever brain teaser puzzles. Because at the time, Google was out "Think Differentlying" Apple. Web 2.0 was all the rage, connecting shit together in ways we didn't know we shouldn't was in vogue, so it made sense for them to ask software engineers about the traveling salesman dilemma and shit like that. Because they were designing things like Google Maps, and they needed people who could solve "find a route from all addresses in the United States to all other addresses in the United States on consumer-grade hardware."
But "Someone who needs an ordinary LAMP stack for their completely unoriginal eCommerce website" Inc. decided to start interviewing IT guys the same way because it made them look hip, and as a result Elon Musk spent a quarter term as Chief Superpower Fucker Upper.