Boeing's engines for passenger jets are not substantially different than they were 20 years ago, are they? coreutils also got some feature additions, fixes, and

Boeing's engines for passenger jets are not substantially different than they were 20 years ago, are they? coreutils also got some feature additions, fixes, and optimizations over the years. Aircraft technology may not have been the best comparison for your argument. Have you seen http://idlewords.com/talks/web_design_first_100_years.htm http://idlewords.com/talks/web_design_first_100_years.htm