I have chronic indecisiveness. Often times at restaurants, I am presented with 10s of food options, all of which seem pretty much the same to me.
My go-to solution for this problem is to simply order what somebody else is ordering, or ask for the waiter to do it for me, and so on. Occasionally I will use a random number generator on my phone.
I have thought about an RNG that only requires your brain to work, but couldn’t come up with anything. Even TIME % n is just too hard.
Do you know of a way to quickly randomly choose from a small range of number 0<n<~20, using nothing but your brain, or whatever else you can find around you?