I dont know if we could quantitatively measure how wise you are. So it is hard to tell if a person is wise or not. And a lot of times, you dont need to read 1000s of books, have a few DR degree or thesis to be wise. It seems wise and Intellect dont necessarily have a linear relationship.
A lot of us, might have thought about Time Traveling, like a lot of blog post telling you "Things I wish i knew" or "Things I could prepared before my startup or X". You would travel back in time and tell your younger self what to do now, what to do next, and what Not to do. But nobody came to realize, your younger self failed to understand why those decision were made, and what causes those action to be made.
One may wonder, try hard, fail hard and learn. Then you become wiser. But it doesn't seems to be the case, it seems we don't "click" until we move on to certain age / stage.
This rhymes with Zen / Buddhism loosely translated to enlightenment or awaken.