But in 2000 you would not have wanted to work with a CPU older than two years. The difference between phases of radical change and those of incremental refineme

But in 2000 you would not have wanted to work with a CPU older than two years. The difference between phases of radical change and those of incremental refinement can be huge. Is the fifty years anniversary 737 much better than the original? Ignoring the MCAS issue, sure. But compared to the best airliners from another 50 years earlier, those 737 perform virtually identical.