Okay kiddo, let me explain to you what resource monotonicity is. Imagine you have a bunch of toys and your friends want to play with them. You want to make sure that your friends can play with the toys in a fair way.
Resource monotonicity means that if there is a friend who wants to play with a toy that no one else is playing with, they should be able to have it. This is because that friend’s desire for the toy is greater than anyone else’s.
But, let’s say that there is another friend who wants a toy that someone else is already playing with. In this situation, we should wait until the person who is already playing with the toy is done before giving it to the other friend.
Resource monotonicity is just a fancy term that means giving priority to the person who wants something the most. It's important to make sure everyone gets a fair chance to play with the toys, just like in other situations where we share or divide things equally.