From the Slate article you posted: "Who says two spaces is wrong?" they wanted to know. Typographers, that's who. The people who study and design the typewrit

From the Slate article you posted: "Who says two spaces is wrong?" they wanted to know. Typographers, that's who. The people who study and design the typewritten word decided long ago that we should use one space, not two, between sentences. The only argument (which is apparently historically inaccurate according to the parent article) made against double-spacing is an appeal to authority and 'the way it's always been done', exactly what you are rallying against in your last reply. Besides, as has been pointed out already in this thread, a period followed by a single space (followed by a capitalized letter) does not solely occur in end-of-sentence contexts, so a period followed by two spaces does provide an added degree of semantic separation. Personally, I have no preference. You do what you like, I'll do what looks good to me. I am amazed that someone would assume that I was uneducated or ignorant (like the typographer interviewed in the Slate article), because I usually put two spaces after a sentence-ending period.