Think Yourself Old

Dan Ariely trumpets a study:

One of the most interesting analyses on the ways in which ourdecisions kill us is one by Ralph Keeney (Operation Research, 2008),where Ralph puts forth the claim that 44.5% of all premature deaths inthe US result from personal decisions – decisions that involving amongothers smoking, not exercising, criminality, drug and alcohol use, andunsafe sexual behavior...Using the same method to examine causes of death in 1900, Keeneyfinds that during this time only around...