In many of the debate formats, coaches and judges frequently advise debaters to "quantify" their position. Statistics can be incredibly confusing. Even when statistical facts come from reputable sources, such as the one's you can find below, collection methods, sample size, base rate fallacy, pseudo replication, and dozens of other statistical and reasoning errors, can render seeming solid numbers vulnerable to attacks from your opponents. Many debaters don't feel confident enough to challenge the provenance and validity of the their opponents questionable statistics. To remedy this, debaters should read an engaging primer on the basic principles of statistics.