It’s the same with the food pyramid. They wanted to sell more food so you need four food groups, and 1400-2000 calories a day; when, historically through thousands of years this was never true. We are consumers, we are their marks. Nothing we have been taught is for our benefit. It is to sell something. Don’t randomly eat or snack because society says to eat three meals, and two snacks a day. Eat when you’re hungry, and stop when you aren’t.