A: If there is a limit to the amount of information that can be stored / represented in the universe and all of it was allocated for a giant integer register, what is the largest number such a register could hold?
B : -1
To understand what recursion is you must first understand recursion. If I teach recursion I first check if you understand recursion. If you do not understand recursion I teach you recursion. However, you can only know someone who understands recursion if you know someone who understands recursion.