It's not confined to religion, no. Although religion often conflicts with common sense because they sign up to a set of ideas that don't allow room for development. That's what happens when you put all your eggs in one basket (full of holes). Things are gonna fall out and you're left looking like a fool.
Some people are just idiots regardless of faith, but religion has nothing to do with intelligence.
Some people are just idiots regardless of faith, but religion has nothing to do with intelligence.
