In these slow summer months, when I finally have a chance to make real progress on writing projects (now that all grading is done as well), I’m going to be posting a bit less new material, but I thought I’d also repost some items from early on that, based on feedback, seem to be of particular interest. And since readership is 5-10 times higher now than in the first three months, some new readers may also find these early items of interest. I’ll flag such items with “Originally Posted on _____.”