On top of that, vast majority of engineers and researchers who had joined the field, only did it in the last few years. While, like with many other fields, it

On top of that, vast majority of engineers and researchers who had joined the field, only did it in the last few years. While, like with many other fields, it takes decades to get to a level of a well-rounded expert. One paper a day, one or two projects a year. It just takes time. No matter how brilliant or talented you are. And then the research moves on. And more is different. A GFLOPS shift to TFLOPS and then PFLOPS over a single decade is a seismic shift.