Terror watch lists and the statistics of risk

_67889765_rigbytributes_apFollowing the Boston bombing and the Woolwich attack, public and media attention again turns to the question of ‘preventability’ – could the dots of “possibly related” information have been connected in advance. Louise Amoore discusses this question on BBC Radio 4’s ‘More or Less’

http://www.bbc.co.uk/podcasts/series/moreorless

And producer Ruth Alexander discusses the implications for how we think about prevention

http://www.bbc.co.uk/news/magazine-22718000