One space after periods, not two
March 20th, 2005I’m reading a manuscript a week for the novel class I’m taking, and I keep seeing two spaces after a period rather than one. This issue cropped up regularly at my last job, which was copyediting.
Two spaces after a period is a practice left over from the days of manual typewriters. Nearly all fonts in word-processing programs are able to ensure that one space after the period is sufficient for visual separation. Those people who continue to use two spaces end up with a document that looks off kilter.
Every time I bring this up, someone argues with me. When in doubt, I always consult The Chicago Manual of Style. Here is the answer from their website to the question of one space or two:
But introducing two spaces after the period causes problems: (1) it is inefficient, requiring an extra keystroke for every sentence; (2) even if a program is set to automatically put an extra space after a period, such automation is never foolproof; (3) there is no proof that an extra space actually improves readability…it’s probably just a matter of familiarity (Who knows? perhaps it’s actually more efficient to read with less regard for sentences as individual units of thought–many centuries ago, for example in ancient Greece, there were no spaces even between words, and no punctuation); (4) two spaces are harder to control for than one in electronic documents (I find that the earmark of a document that imposes a two-space rule is a smattering of instances of both three spaces and one space after a period, and two spaces in the middle of sentences); and (5) two spaces can cause problems with line breaks in certain programs.
So, in our efficient, modern world, I think there is no room for two spaces after a period. In the opinion of this particular copyeditor, this is a good thing.