Start from the axiom that computers don't make mistakes. Then change to a new computer system at lower cost, because it's cheaper and computers don't make mista

Start from the axiom that computers don't make mistakes. Then change to a new computer system at lower cost, because it's cheaper and computers don't make mistakes. So cheaper is better. Don't need a roll back plan, all computer systems work fine. Then put on your best surprised expression and wait to see if you manage to unwind the errors before a competitor exploits them. It is fascinating how much faith people have in computers, even after at least a decade of watching them fall over. Sure it crashes a lot but it couldn't get the answer wrong.