That's a different argument about the third pilot.
I'm just pointing out that while my parent was correct that the argument failed as a justification for two pilots, it doesn't fail for any other number. It's similar to the proof that all horses are the same color.
> while my parent was correct that the argument failed as a justification for two pilots, it doesn't fail for any other number
It doesn't fail as much as not work. One can always come up with hypotheticals justifying more redundancy. Whether that's worth the tradeoff requires actually looking at the facts.
I'm just pointing out that while my parent was correct that the argument failed as a justification for two pilots, it doesn't fail for any other number. It's similar to the proof that all horses are the same color.