Jim Al-Khalili talks to roboticist and psychologist, Noel Sharkey.
John McCarthy talks to hermit Rachel Denton about her decision to live alone.
9/9 Gardener Carol Klein's choice is wild garden hero, William Robinson. With Matthew Parris.
5/6 With comedian Dave Gorman and newspaper columnists Matthew Parris and Julia Hartley-Brewer (R)
Wednesday 30 January 2013