The politics of prevention and the barriers to preventive efforts - whether it is in sports medicine, heart disease, cancer, or terrorism - are similar. Over the past seventeen years, I have found that the single greatest barrier to preventive efforts is the fact that we are taught throughout our educational system to be reactive rather than being proactive. To think in a proactive or preventative manner is a much different mindset than thinking in a reactive mindset. It involves a different set of observation skills and a different set of implementation skills.