Brand new member here - but been around the aviation game many decades.
I am amused by the 2 vs 3 vs 4 engine issue. Remember the late 60's when Douglas & Lockheed were trying to sell trijets for Transatlantic ops, and many of the more conservative operators were HIGHLY skeptical that the public would EVER accept anything less than FOUR engines?
Yet - only 10 years later Swissair set some kind of record flying a DC-10 from Karachi to Athens after #1 went south on takeoff! The captain had to write a LONG report, but he was not disciplined.