A problem.

boy: Can we do different things every day?
me: Yes.
boy: But then there is something we cannot do differently.
me: Okay, ...what is that?
boy: You got to work right? ...
me: Yes...?
boy: ...and I got to go to school right?
me: Yes!
boy: That is a problem that we need to solve!

***I burst out laughing!
Well well well my dear boy, you are most welcomed to solve that problem!