TITLE: Application of Category Theory
QUESTION [5 upvotes]: Can anyone give an example of a simple application of category theory? Not a very mathematical one, just one that shows how it can be used. Something for example that can be solved by just getting the limit or something (preferably in the category of sets or finite sets). I searched but could not find a published one. I understand that to apply category theory on something you need to be very specialized on that area. Thank you

REPLY [3 votes]: Have a look through this book about category theory for scientists.