Quote Originally Posted by BRVV View Post
Yes. Never claimed otherwise. You DO test however if your multi-server setup of a massive project spanning literal continents has servers that can actually communicate with each other

#worksOnMyMachine
Not, however, on the live systems. You have development and QA environments and the configuration on any of those could be out of sync with production or doesn't experience the same conditions that the production environment would. So then the bug only manifests when the live environment is working with the new code.