Oh, I'm never certain. Things just aren't. I wish they would be. I wish I could be more like you, but I don't understand how it works. How certain is. Sometimes there's a way to know, but I'm never sure until I test it. Business is making you uncertain? I thought being a police officer meant you were quite sure about the world. They give you guns, after all.
I had someone step into my dream once, without asking. It was very rude, so don't do that, they won't like it. But it is a little like that, only stories are bigger than dreams. Dreams you wake up from.