Efficiency isn't limited to execution speed. Memory protection is efficiency, even if it has cost in execution speed. Better abstractions make it possible to wr

Efficiency isn't limited to execution speed. Memory protection is efficiency, even if it has cost in execution speed. Better abstractions make it possible to write more complex programs, at the cost of some execution speed. I've programmed on very slow hardware in the past, and the only thing I miss from those days is my hairline.