I've been trying to get a handle on what kind of progress has been made in closing the gender pay gap, and this has led me to ask myself what 'closing the gap' actually means.  It seems to me that the obvious 'zero gap = equality = fairness' may disguise something important. The Paula Principle is about the due recognition of women's competences, and I'm mostly interested in career trajectories over time, ie what kinds of progression women make.  But pay is obviously the most available indicator, and the ONS has recently published some important data on trends over time on the GPG.  (By the way, I want to say 'chapeau'…