It’s obvious that knowledge relating to oil and gas extraction is going to disappear in 20-50 years. Engineering knowledge relating to ICE engines will also di

It’s obvious that knowledge relating to oil and gas extraction is going to disappear in 20-50 years. Engineering knowledge relating to ICE engines will also disappear (though it seems gas turbines will be with us for a little longer). I’m not sure it matters that much however. If we ever need these things again in the future it seems that we could re-learn it in a decade or two.