My head canon is that Tony Stark has a superpower: everything he builds works the first time.
If it's really complicated, like an entirely new Iron Man suit, then it might malfunction once in an amusing way. Then he tightens a screw and it's perfect. It never fails outright or bricks itself.
In my experience, this is not how hardware or software development goes. I want this power so much.
IF YOU DON'T RULE AND STONE, YOU AIN'T COMING HOME!