I have productive friends. My previous post drew on Melissa Benn's What Should We Tell Our Daughters?  This one draws on Time on Our Side, Anna Coote's broad-ranging and stimulating collection from the New Rconomics Foundation. It's subtitled 'a new economics of work and time', and brings together ideas about how we should measure well-being more adequately than via conventional GDP growth;   reconcile economic policy and practice with the imperatives of environmental change;  and arrive at fairer and more satisfying balance of  paid work, caring and other activities.  Sounds fairly challenging?  It is, but it's a thoroughly grounded and realistically argued set of essays. The book's key agenda item is the…