> if you'd said 100%±3dB…

I can't shout that loud!

More people died on UK roads in traffic 'accidents' (ie, avoidable human misjudgments and errors) in the seven days following the first tube bombs than in that event. No two-minute silence or fancy church services for all those deaths. More additional deaths were caused in the USA by people taking to the roads in the year-long post 9/11 'I won't fly' frenzy than died in the twin towers themselves. Strange thing, risk assessment...