"Surprising" is fine. The title isn't "Why you're not surprised at throwing 92 heads in a row". There's no agent in the title, so he's referring to an objecti

"Surprising" is fine. The title isn't "Why you're not surprised at throwing 92 heads in a row". There's no agent in the title, so he's referring to an objective idea of an event being surprising. I'm not sure I agree with his concept of "surprising", but it's at least objective.