A BRIEF PAUSE

I had already written most of the next blog post, when I took another look at my 1981 article. There I found that I had said certain things much more clearly and forcefully [I was thirty years younger.]. I would like simply to reproduce portions of that article in this blog, although without including the rather complicated mathematics that accompany my exposition there, but I am at the moment having trouble accessing the article online [JStor, or such like], and I am loathe to sit at my computer typing into a blog post what I ought to be able to cut and paste. So be patient as I attempt to solve this problem. Perhaps later today I shall be able to put up a lengthy post that will bring my tutorial pretty much to completion [though there is a vast amount remaining to be said, of course.]