There are plenty of problems, big and small. You can't have the solution for them all and it might not be worth it to search for the solution right away. Some problems might even have a solution available at the time.
But it's important to listen and know about those problems. If you don't know them you don't know to keep your eyes open for the solutions. When you do, those solutions could come up anywhere, anytime.
It's not about resolving all the problems. But if you can follow up on any of them later when you have encountered a potential solution it makes a difference.