Yes, it’s from a book called “Uncle John’s Bathroom Reader” and that book was resting on a closed toilet seat in a nation that only kind of uses the metric system in certain situations… however, you’d be surprised how much you can learn after a single visit to any local fast-food joint!
The one that blew my mind the most was finding out that calories are calculated by setting the food on fire, and then measuring how much it can heat water. Calories are literally just a measurement of how well something burns.