Just as there is a movement to place citations of authority in briefs in footnotes to make the narrative text more easily readable, from the world of typographers comes the decree that there should be only one space after the period at the end of a sentence before a new sentence begins, instead of the two spaces most of us have used for decades. So why is that? What’s the reason for one space instead of two? Apparently, the use of two spaces is a habit left over from the manual typewriter age, which was itself a departure from that settled rule of one space found in earlier typeset printed text. This was discussed in an article by Farhad Manjoo in the online magazine…