Arthur C Clarke's third law: "Any sufficiently advanced technology is indistinguishable from magic."
Since only the programmers understand the program, it is magic to the rest of the team. And since magic doesn't exist, the fault must be the programmers who created the magic.
Code doesn't break. It reacts exactly the same time every time. When something new happens that never happened before, it's because the mechanicals, electricals or drivers gave the code some new stimulus that wasn't tested before. So it's the other teams' fault for not supplying enough test cases.