Wasn't someone asking about motorcycle helmets, somewhere upthread? All I can find is the chapter from "Risk and Freedom" by John Adams which is available as a free download here, http://www.john-adams.co.uk/books/
A prime exhibit is a graph of motorcycle deaths in USA over the years during which helmet compulsion laws were enacted and then repealed in some states. This government produced graph, from the cover of a report urging motorcycle helmet use, seems conclusive. It shows deaths falling as helmets were mandated and rising again as some states repealed the law.
Adams disaggregates the figures, and this shows that deaths rose more in the non repeal states. The prior fall in deaths is clearly a continuation of a trend established before compulsion.
A prime exhibit is a graph of motorcycle deaths in USA over the years during which helmet compulsion laws were enacted and then repealed in some states. This government produced graph, from the cover of a report urging motorcycle helmet use, seems conclusive. It shows deaths falling as helmets were mandated and rising again as some states repealed the law.
Adams disaggregates the figures, and this shows that deaths rose more in the non repeal states. The prior fall in deaths is clearly a continuation of a trend established before compulsion.