It’s not a cognitive bias except at an organizational level, and that’s the way aviation regulation works. If the regs say that the system must be redundant, t

It’s not a cognitive bias except at an organizational level, and that’s the way aviation regulation works. If the regs say that the system must be redundant, the replacement system must pass a lot of tests that it didn’t before. That also means that the previous certification was improper and all 737MAXes should be declared unairworthy. The FAA wants to give Boeing some wiggle room to operate with the current system until the new properly certified one is ready. They don’t want an interim quick fix because that would be a clear violation of regulations, where there is now this ambiguity that the FAA is hiding behind that the system doesn’t need to be redundant by regulation.