This is a joint posting with co-blogger Wilson; it's possible to select multiple categories but not possible to select multiple bloggers.

Tyler's MR post (a reproduction of this post by Bryan Caplan) on job safety reminded us of the chart below (source; scroll down to Figure 34.1). If the authors had not inserted the vertical line, there would be no way to tell that OSHA came into existence in 1970. OSHA did nothing to change the existing downward trend in workplace deaths.