I need to know if there is a word for this feeling, I notice that it is not to feel indifferent. It's something like this:

Person who is not easily surprised, correctly predicts what will happen or people, and usually sees everything stream without any emotion or peculiarity.

If not, then I want to know if there is a word for this, I removed part of what I wrote before:

Person who is not easily surprised, and usually sees everything stream without any emotion or peculiarity.