[4sak3n]

"Two is one and one is none."

That's pretty much been aeronautical gospel since dinosaurs strapped cardboard to their stubby arms and dreamed of soaring.

[4sak3n]

To elaborate, I'm pointing out that redundancy has been an integral part of aeronautical engineering for ages so to ignore it in any situation, never mind in one where the pilots are kept out of the decision making loop, is criminally negligent.

[snazzySnappy]

Which is to say, if you have redundancy, your thing is reliable, and thus a thing at all. No redundancy renders your life saving equipment worthless.

But not, by corollary, that two is none.