Problem . Fred brings home 100 kg of potatoes, made up of 99% water. He leaves them outside, allowing for some water to evaporate, thus reducing the water content to 98%. How much do the potatoes weigh now? Answer . The new weight is 50 kg. Fig 1 . Potatoes contain about 80% water on average. Solution . At first glance, the answer might seem illogical. The water content dropped by only 1%, so the weight shouldn't change much. However, the solid content doubled from 1% to 2

Puzzle: Three students, Emma, Peter, and James, shared a pizza. Emma ate a quarter, Peter ate a third , which resulted in Peter having 2...

This intriguing puzzle, which even Harvard students got wrong, highlights how two modes of thinking, fast and slow, affect our decisions