Would you also have that belief about how much weight a human can lift ? Just because a human can lift 500lb, we will never build a machine that can lift more

Would you also have that belief about how much weight a human can lift ? Just because a human can lift 500lb, we will never build a machine that can lift more than that ? Why is it so crazy to think that we, the tool building animals that we are, could also build a machine that things better than us, just how we built a crane ?