John Kulp writes:

Completely silly, of course. It's called redunancy.

Redundancy won't help in a deliberate attempt.

Check the web. Where you'll find out that 4 engined planes aren't
anywhere near as efficient as two engined. Have much less fuel
efficient engines,, etc.

They don't have to have four engines to be big, and they are certainly not 100
times less efficient.

Uuh. that was about 40 years ago ace when it was true.

So things change.