Claudia Goldin's presidential address to the American Economic Association - don't go away - is a stunner. It really should help to shift the whole focus of two important debates: the role and use of skills; and questions of gender equality at work. So it's hugely PP-relevant. There are large chunks of sophisticated number-crunching which are well over my head, but Goldin does a great job of summarising the key points, and how they fit into the historical narrative of what she calls the 'grand convergence' of male and female roles. She traces out the previous chapters of this narrative, which include greater female participation at work and, especially, changes in…