Bruce Schneier : When horrific events happen , we look for patterns . He says people are n't good about understanding probabilities and often exaggerate risks . Obama : After Katrina , policies were implemented that caused enormous expense and damage . He says much can be learned if we look at patterns among many events .
Bruce Schneier : When horrific events happen , we look for lessons . He says people are n't good about understanding probabilities and often exaggerate risks . Schneier : After 9/11 , policies were adopted that caused enormous expense and damage . He says lessons can be learned if we look at patterns among many events .