On Knowing Something

Imagine you are shot back to the Stone Age, how many things could you reinvent? This is one of the main premises of the show Dr. Stone. The main character uses science as his power instead of might and force. He goes on to reinvent what he can with the tools he has.

If you knew how computers work, could you reinvent and rebuild it from scratch given the time and resources? What about the engine or electricity? Antibiotics? Calculus? It would be an interesting exercise to see how many things you could in theory reinvent.