Triple modular redundancy - explored on the earliest computers, when these kinds of CPU errors were common (but for other reasons). It isn't commonly implemente

Triple modular redundancy - explored on the earliest computers, when these kinds of CPU errors were common (but for other reasons). It isn't commonly implemented today for the same reason that ECC RAM isn't in everything by default - people tend to prefer paying less and just crossing their fingers. Rad-Tolerant Lockstep Quad Core 8051: https://www.eetimes.com/rad-tolerant-lockstep-quad-core-8051-uses-only-12-of-fpga/ https://www.eetimes.com/rad-tolerant-lockstep-quad-core-8051... Tolerating rads with cold-war mcu softcores. Glorious.