Report in New Logic/Math Puzzles Posted May 11, 2011 I don't get why what you're saying differs much from Fact 1: 50% of traffic accidents that result in injuries and deaths are caused by a drunk driver. I think one can safely infer that the fact that the driver is drunk caused the accidents...even if not the statement "Drunk driving leads to traffic accident that cause injuries and deaths" doesn't add much more. For example how often do they occur? How does that differ from sober driving? What does leads to mean? Let me put it this way. If fact 1 said 50% of traffic accidents that result in injuries or death are caused by a blonde driver, you would not infer that blonde driving caused the accident. (Well, I might, but it wouldn't be logical.) I agree with you that it matters how it differs from sober driving, (or from brunette or redhead driving). The fact that we know being drunk impairs our reflexes and judgement really plays no part in a strictly logical argument.