It's not a SpaceX-only scheme, nor is it novel technology. It's got a long history in fighter jets, as well as modern passenger planes for example (Boeing 777).

It's not a SpaceX-only scheme, nor is it novel technology. It's got a long history in fighter jets, as well as modern passenger planes for example (Boeing 777). Triple Mode Redundancy: https://en.wikipedia.org/wiki/Triple_modular_redundancy https://en.wikipedia.org/wiki/Triple_modular_redundancy Also, the longest life span SpaceX has ever really needed is maybe the Dragon, which is a month-long mission. Cassini has been in space for 20 years. Very different design requirements.