CAs are supposed to be in the business of trust. We are supposed to hold them to the highest standard of machine trust. If they screw up and fix the error in

CAs are supposed to be in the business of trust. We are supposed to hold them to the highest standard of machine trust. If they screw up and fix the error in a matter of hours or days... alright. But CAs who charge money for making certificates need to earn our dollars. Sure, everyone makes mistakes. And if you're in the business of trust, you find ways to uncover and correct those mistakes. Also, you insure against those mistakes, and some of that insurance buys another set of eyes.