Fats are idiots - percentage edition I was doing some post Christmas holiday shopping with a college friend earlier this week and came upon a nice upper mid-scale female clothing brand. They had a sign at the front that said "additional 60% off when you buy 3 or more items". Great. I was probably going to buy stuff anyway since I needed new work clothes. Around the store there are different signs for different areas, some with 40% off, some with 50% off. I knew 60% off on top of 3 items that are already 40-50% off was too good to be true, but i asked the cashier anyway just to see. The cashier was a short (probably 4'11 to 5' tall) whale, definitely as wide as it is tall, if not wider, waddling around. This brand in a regular non-outlet store would never have her repping their brand. Anyway i ask her if it's 60% off on top of the already 50% off or if it's one or the other? She responds with "one or the other". Ok fine. Still buying. But before i could answer, she keeps going and says "if it was both, that'd be 110% off & you'd be getting it for free". I blank stared at her for a good 5 seconds trying not to laugh. I'm no math wizard, but that's not how percentages work, circa middle school. My friend was giggling and walked away to "browse" elsewhere and hide her giggles. Finally i came to and responded with "actually That's not how that works but ok. I'll take all 3 items"."