Measuring threats
Bruce Schneier blogs about the reaction on the part of police to some backpacks hung on a tree. Personally, I wouldn’t argue that treating backpacks on a tree as possible bombs is an overreaction in this case. It isn’t as if we haven’t seen bombs in backpacks. Admittedly, it seems unlikely someone wanting to commit a terrorist act would hang them in a tree, but that’s a fine line to tread. However, it did bring to mind one thing that has been bothering me for the last couple of days, and that is the assumptions we make about security, rather than using something akin to common sense. If a danger fits a profile currently popular with the public, it seems to be automatic to assume any situation that comes close to that profile must be a danger. As a result, you end up not being able to leave anything unattended in Boston, take pictures of public works facilities, or put your hand near your waistband in a poor neighborhood without taking the risk it will trigger someone’s sense of danger due to a scenario they have already constructed in their head. ...