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 analyzes reviews to verify trustworthiness.
so awesome. i have known a few ... never needed one to save my life ... thank goodness ...but so glad so many do know how to do that. and save us from other issues, mishaps, diseases or whatever we might need them for. thanks!!