Oh my, this sentiment is common. Errors can't happen inside a Turing machine. The errors are just when you step outside the process to interact with externaliti

Oh my, this sentiment is common. Errors can't happen inside a Turing machine. The errors are just when you step outside the process to interact with externalities. Computations should be thought of as having errors in it them, any more than the integers do. Network or disk calls maybe have all sorts of things happen. You have to think about the failures whenever you have succumbed to reaching outside of your call stack for answers. Because those remote or shared by other processes resources might not reach the same level of certainty, and your perfect code might or might not need the answers or be able to work around their lack.