Amongst serious horseplayers, takeout rates in pari-mutuel pools are a frequent discussion. It should be a focus of breeders, owners, trainers and track operators. Unless they are serious bettors too, takeout rates rarely "get a run" from those constituencies, though. Our recent #FreeDataFriday piece highlighted the impact of various takeout rates on win pools at three different tracks. The higher the rate, the lower the return to winners--and thus, the less they would have to churn through the pools and start another cycle of betting. Recently, a few bettors lamented...