It’s not necessary to know a lot of science to be a good atheist, but it helps you to hold your ground when confronted by the inevitable Christianists lusting to Christianize you. To deal best with them at their own level, however, it might be best to be completely ignorant.
Unlike honest, hardworking Christians, alongside whom you can work for years without getting into each other’s private affairs, they will spend endless hours pulling all kinds of tricks while learning how to Christianize you. Their aim to “win you over” is to WIN whatever it takes. Need to lie? Don’t hesitate, we gotcha covered. Is browbeating required? Of course. Whatever it takes. Never relent. The bastard will give in or give up. Make the bitch run. We don’t want that kind around here! Good riddance!
If you’re alive and breathing, you have probably been subjected to that kind of mistreatment at least once, most likely from someone wishing for you to adopt their denomination. While changing your sects may not be as intense to consider as taking up a whole religion, if you felt happy with your old sect there would be some stress involved.
We can take lessons from Christianist practices; our aim for avoidance of confrontations is our intended outcome, versus the Christianist’s intention to engage you until you give in, or else run for the foothills. That is not a good choice; they have cousins living there who will be alerted to your impending arrival. Unless you feel threatened, it might be best to just stay put and provide a good example of how they should behave. Passing advice without knowing your situation could be dangerous. Act disinterested while you size your culprits up. Arguing will get you nowhere and exasperate you by demonstrating the immense flexibility built into the Christian version of reality.