A good point, but all it has done is upped the stakes. Who knows whether single-threaded performance has reached a real barrier or not? Will it be like the so

A good point, but all it has done is upped the stakes. Who knows whether single-threaded performance has reached a real barrier or not? Will it be like the sound barrier? Or more like the speed of light? (I realize that the problem is, literally, the speed of light, among other quantum effects.)