Sort of. It's also relative to how much you can break down the causes into something that makes sense to your worldview.
For example: The magic I use back home probably wouldn't seem rational to someone from a world like this one, but with proper explanation as to how it functions and the forces behind it, I'm positive I could make it make perfect sense even to someone for whom "magic" is just a fairytale.
[Voice]
For example: The magic I use back home probably wouldn't seem rational to someone from a world like this one, but with proper explanation as to how it functions and the forces behind it, I'm positive I could make it make perfect sense even to someone for whom "magic" is just a fairytale.