The system will be "fixed"... by firing the current operator as an example to the next.
Maybe, maybe someone will print out a list of procedures and tape it up somewhere, telling the new operator that they're required to press the correct button, perhaps in bold and underline for maximum effect. But that's probably it.
Because if the system isn't fixed, it's just going to happen again. Surely you're not arguing that the system is without flaw?