Shopping and fretting: the ethics of buying the right thing. CSF’s Sandy Black will be part of a panel discussing the ethics of shopping and whether boycotting is the right thing to do. The discussion is part of the Barbican’s Battle of Ideas festival. If you are student, there are a limited amount of discounted tickets available for the weekend. Sunday 19 October, 16.00 until 17.15, Cinema 3, Barbican.