Here's what I'm talking about - In the early day's of aviation, piston engine / propeller drive aircraft got progressively faster. Engines got bigger, with increased horsepower. The last days of the piston engine saw some incredibly complex monsters.
But the piston and prop hit a pretty solid wall. Fortunately, the jet cam along at about the same time. It's completely different. Different principles and different implementation. It's not even measured the same. Piston in horsepower and jets in thrust.
Silicon is nearing that wall. What's out jet engine? Graphene? Quantum? Something else?