So true. And with more and more devices we use have computers in them (as small as the ATtiny85), then we'll head somewhat back to it. 'Magic' incantations will

So true. And with more and more devices we use have computers in them (as small as the ATtiny85), then we'll head somewhat back to it. 'Magic' incantations will fix whatever nearly permanent firmware bugs or hardware bugs exist. Because, yes, these computers are deterministic IFF you have the software, logic, and its variables. And hope the sensors aren't malfunctioning. My wife had a car that a temp sensor somewhere thought the car was always much colder outside. And it then set the cold/heat as a differential of what it measured. There was no way to say "Hot air, blower medium speed". It was a song and dance to get the "right" set of temps and blower speed.