You really can never say in code we trust entirely, because we say the same thing about our state of the art encryption today that the Nazis said about enigma i

You really can never say in code we trust entirely, because we say the same thing about our state of the art encryption today that the Nazis said about enigma in WW2 "It would take more than every human lifetime combined to crack this code!" But then the next paradigm of computing sets in, and you have a Turing machine built, or a Quantum brute force attack become possible on RSA 4096 rendering it as useless as enigma code. The fact of the matter is you can't declare a system that can not update it's own software "Autonomous" - someone will attack.