All the replies are missing my basic point. Everything built today is far more complex than what was built before. If a car is twice as hard to make then I can

All the replies are missing my basic point. Everything built today is far more complex than what was built before. If a car is twice as hard to make then I can be twice as productive, but still only produce 1 car (with twice as many features, say). Or I can make a single phone, but with N times as many features. The productivity gain has been absorbed by complexity in the things we produce.