主播大秀

Michael Blastland, the author, broadcaster and co-creator of More or Less, joins Tim Harford to talk about the hidden influences that make a big difference to the way the world is, but which we can鈥檛 measure or even see. This is the focus of his new book The Hidden Half. We talk about counting sheep, productivity, and some interesting findings from studies of female crayfish.

Presenter: Tim Harford
Producer: Darin Graham