There’s a wide­spread mis­con­cep­tion that “prop­er” Eng­lish requires two word spaces after a sen­tence. And that’s under­stand­able. After all, when pro­fes­sion­al print­ers of Eng­lish works began chang­ing to sin­gle sen­tence spac­ing in the first half of the twen­ti­eth cen­tu­ry, there was no announce­ment. There were no ads in papers and no town criers on street cor­ners herald­ing the change. And as the mut­ed tap­ping of word proces­sors and com­put­ers replaced the steady “clack clack” of the type­writer a few decades ago, major style guides qui­et­ly changed their guid­ance to a sin­gle space as well. Again, there were no high­way bill­boards and no air­plane ban­ners. Like many Eng­lish lan­guage con­ven­tions, usage sim­ply changed over time.


Text from Per­son­al Mem­oirs of U.S. Grant, pub­lished in New York in 1885.

So it shouldn’t be sur­pris­ing that peo­ple are shocked when they hear that what they learned was “cor­rect” in typ­ing class is no longer gen­er­al­ly accept­ed by experts and almost nev­er appears in pro­fes­sion­al­ly print­ed works today. What’s strange about this par­tic­u­lar top­ic is, (1) how upset peo­ple get when they learn about the change, and (2) that peo­ple have seen the change for decades with­out even real­iz­ing it. A well-read friend of mine laughed when I brought this up a cou­ple of years ago, say­ing, “go check a book for yourself—two spaces!” I’ve encoun­tered oth­ers who say they’ll only change to one space when books and mag­a­zines make the change. Of course, they’ve no doubt read thou­sands of books and mag­a­zines. The sin­gle space between sen­tences just didn’t reg­is­ter with them. There’s end­less amuse­ment to be had by read­ing on the Web about this top­ic as well. A Web com­ment draw­ing atten­tion to the “two spaces I’m using here that I will always use” is inevitably (and angri­ly) fol­lowed by one along the lines of, “Hey, who delet­ed my extra spaces?” They’ve read plen­ty of Web pages, no doubt, but nev­er real­ized that HTML sim­ply strips out the extra spac­ing.


Text from a 2005 Pen­guin Books edi­tion of Edward Gib­bon’s work, The His­to­ry of the Decline and Fall of the Roman Empire, first pub­lished between 1776 and 1789.

This mis­con­cep­tion is shared by some sur­pris­ing peo­ple. In late 2009, I was help­ing my two nieces apply for col­lege in New York State. After review­ing their appli­ca­tion let­ters, I asked them why they were putting two spaces between sen­tences. “That’s the way we were taught in high school,” they replied. “Did they tell you why?” I asked. “No.” It was my turn to be shocked. An infor­mal sur­vey of some local teach­ers was reveal­ing. Few knew about the change.

Unfor­tu­nate­ly, the main cul­prit in this mis­con­cep­tion is a lack of knowl­edge. Advice from typog­ra­phers, pub­lish­ers of style guides, and gram­mar­i­ans exist­ed, of course; it just wasn’t col­lect­ed in one place. So, I was glad to see the Wikipedia “Sen­tence spac­ing” arti­cle cre­at­ed in 2010. It helped to fill the knowl­edge gap.

It may be years, even decades, before this change is applied con­sis­tent­ly by the aver­age typ­ist. But at least this repos­i­to­ry of knowl­edge now exists so peo­ple can make informed deci­sions. And who knows? In fifty or a hun­dred years, extra spac­ing may be back in vogue.