To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
It's exactly what it says on the tin and nothing more. For those expecting an Impro-like experience, you will be disappointed. Not a thick book at all, but still full of good information about the specifics of Theatre Sports/ComedySportz formats.