I wonder if we are beginning to see the end of assortative mating. For a long while now we have tended to select our life partners from the place in which we work — rather than, as before, from our home towns or places of education. This process began with the long march of women into the workplace in the early 1970s, a development which, while overall being undoubtedly both benign and just, nonetheless slightly widened the gap between rich and poor.