Imagine you have a bunch of toys, and you want to make sure that each toy takes up exactly one spot on your toy shelf. This is similar to what mathematicians call a "loop," where you have a set of objects and a rule that tells you how to combine them.
But sometimes, when you try to combine the toys in different ways, you might find that there is one toy that doesn't fit anywhere. This is called a "point of failure" in loop theory, and it means that the set of toys you have and the rule you're using to combine them aren't giving you a complete solution.
Quasigroup theory is similar to loop theory, but instead of just one rule for combining objects, you have a bunch of rules that are all related to each other. This can be like having a bunch of different games you can play with your toys, but they all have to follow certain basic rules to make sure everything works properly.
In quasigroup theory, the biggest problem comes when you try to combine two games or rules together in the wrong way. This can create a situation where some of your toys don't fit in with the new set of rules, or where you end up with too many toys in one spot and not enough in another.
Overall, loop theory and quasigroup theory are both ways for mathematicians to study how different objects can be combined and how those combinations can be manipulated. But just like with toys, it's important to make sure that everything fits together properly if you want to have a complete solution.