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!
Measurement works because it’s accepted on it’s own terms.
If I were to believe that 1 is 2, it would be very difficult to explain that 2 is indeed double the normal amount of 1.
The same goes for some alien species that has too many or not enough fingers and doesn’t use prime numbers because of this.
I don’t personally believe that math is truly universal. But maybe I’m being existential ;)
Is someone really arguing that prime numbers are a thing because we have 5 fingers?