If, like me, you learned to type a million years ago, you learned that you should put two spaces after a period at the end of a sentence. It turns out that’s no longer true, or so says Grammar Girl anyway, who, as you know, is my preferred authority on things like this, and would probably be appalled at this run on sentence.

Although how many spaces you use is ultimately a style choice, using one space is by far the most widely accepted and logical style. The Chicago Manual of Style (1), the AP Stylebook (2), and the Modern Language Association (3) all recommend using one space after a period at the end of a sentence.

I’m shocked, and a little dismayed, actually. The Wife^® tells me she never included the second space.

Breaking this habit will be painful, if my experience typing this post is any indication.