I studied typing for three years when I was in high school at Insituto Pan Americano in Panama City, Panama. That was in 1963-1965. In order to graduate, we had to type at least 55 words per minute, which was pretty fast, considering that there were no electric typewriters back then. I recall I had an old but efficient Underwood typewriter.
After all these years, I’m still a good typist. Don’t have to look at the keyboard and use all my ten fingers to type. These typing skills were a great advantage when I went to work and personal computers began to emerge and no secretaries were assigned to my job. I had to do it all. No problem, I knew how to type my own reports and letters.
Back then the rule was to leave two spaces after a sentence. If you left only one spaces, you were deducted ten points from the final score and that wasn’t good for your grades. So after three years of using the rules, it was embedded in my brain, that after a sentence, I had to leave two spaces, and that was that.
Last week I found an article in the Cloud, that this rule was wrong. The correct way of typing was to leave only one space after a period. What? Was I wrong for almost five decades? Apparently I was. This is what I found out.
“Can I let you in on a secret? Typing two spaces after a period is totally, completely, utterly, and unarguable wrong. And yet people who use two spaces are everywhere, their ugly error crossing every social boundary of class, education, and taste.
The people who study and design the typewritten word decided long ago that we should use one space, not two, between sentences. That convention was not arrived at casually. James Felici, author of the The Complete Manual of Typography, points out that the early history of type is one of inconsistent spacing. Hundreds of years ago some typesetters would end sentences with a double space, others would use a single space, and a few renegades would use three or four spaces. Inconsistency reigned in all facets of written communication; there were few conventions regarding spelling, punctuation, character design, and ways to add emphasis to type. But as typesetting became more widespread, its practitioners began to adopt best practices. Felici writes that typesetters in Europe began to settle on a single space around the early 20th century. America followed soon after.
Every modern typographer agrees on the one-space rule. It’s one of the canonical rules of the profession, in the same way that waiters know that the salad fork goes to the left of the dinner fork and fashion designers know to put men’s shirt buttons on the right and women’s on the left. Every major style guide—including the Modern Language Association Style Manual and the Chicago Manual of Style—prescribes a single space after a period. (The Publications Manual of the American Psychological Association, used widely in the social sciences, allows for two spaces in draft manuscripts but recommends one space in published work.) Most ordinary people would know the one-space rule, too, if it weren’t for a quirk of history. In the middle of the last century, a now-outmoded technology—the manual typewriter—invaded the American workplace. To accommodate that machine’s shortcomings, everyone began to type wrong. And even though we no longer use typewriters, we all still type like we do.
The problem with typewriters was that they used monospaced type—that is, every character occupied an equal amount of horizontal space. This bucked a long tradition of proportional typesetting, in which skinny characters (like I or 1) were given less space than fat ones (like W or M). Monospaced type gives you text that looks “loose” and uneven; there’s a lot of white space between characters and words, so it’s more difficult to spot the spaces between sentences immediately. Hence the adoption of the two-space rule—on a typewriter, an extra space after a sentence makes text easier to read. Here’s the thing, though: Monospaced fonts went out in the 1970s. First electric typewriters and then computers began to offer people ways to create text using proportional fonts. Today nearly every font on your PC is proportional. (Courier is the one major exception.) Because we’ve all switched to modern fonts, adding two spaces after a period no longer enhances readability, typographers say. It diminishes it.
“A space signals a pause,” says David Jury, the author of About Face: Reviving The Rules of Typography. “If you get a really big pause—a big hole—in the middle of a line, the reader pauses. And you don’t want people to pause all the time. You want the text to flow.”
Is the rule of place one space after a period is arbitrary? Sure it is. But so are a lot of our conventions for writing. It’s arbitrary that we write shop instead of shoppe, or phone instead of fone, or that we use ! to emphasize a sentence rather than %. We adopted these standards because practitioners of publishing—writers, editors, typographers, and others—settled on them after decades of experience. Among their rules was that we should use one space after a period instead of two—so that’s how we should do it.”
I don’t know about you, but I’ve decided that I won’t abide by the rule of one space after a period. Even if I wanted to, I know it would be impossible to do so. My brain just won’t bulge. I’m sorry, but I will be a renegade blogger and two spaces will persist in my blog. For this I deeply apologize, but for this old dog, learning this new trick is just not possible. Good Day.
Source: Space Invaders. Why you should never, ever use two spaces after a period by Farhad Manjoo – Slate Magazine.

I just read the entire original article, and I can boil it down for you. Farhad Manjoo is saying, “I am smart, and you are stupid. I am going to prove to you how smart I am, and if you don’t agree by the time you’ve read my completely snarky article, you are even more stupid than I thought.”
The internet is filled with so-called “experts” carving out their particular niche.
If I’m writing for someone who requires the Chicago Manual style, I’ll abide by its spacing rule. Otherwise, I’ll do as I please.
But here’s the thing – whether I use one space or two, I never, ever would adopt the kind of arrogant, dismissive and smug tone of Mr. Manjoo. He’s perfectly representative of someone who’s out to establish himself as better than the Great Unwashed – Slate is full of them.
Gee! And I haven’t even had my coffee yet!
Couldn’t agree with you more, Linda. I will continue to use my two spaces as usual no matter what the “experts” say.
Go ahead and enjoy your Java,
Take Care,
Omar.-
It’s a cute bit of historical history, but then if you go back far enough we should all be typing in cuniform with no periods at all. If the typewriter changed things, the typewriter changed things and two spaces would be modernly correct.
When I was introduced to the typewriter the convention was to use two spaces after a period. Back then, pre-electric days, I didn’t learn to “touch type.” Using my little fingers on the Q just didn’t hit hard enough to give a good imprint on the page and forget it if there was a carbon copy beneath. I developed my own system using two fingers on my left hand and three on the right plus thumb. Worked for me and I had a fairly good typing speed though not steno fast. Oddly, most of the reporters I worked with on the Miami Herald and the Cape Cod Standard-Time didn’t touch type either. Quite a few didn’t even use as many fingers as I did and restricted themselves to their two index fingers.
Even when I got an electric typewriter where finger force wasn’t needed to make a proper impression I never changed how I typed. I remember when I went to work in the Public Relations Department at Holy Cross Hospital in Fort Lauderdale and sat in front of an IBM Selectric I thought that was SOOO cool.
But when I got my first computer I decided to teach myself how to touch type using a number of different programs. THEY penalized you for using two spaces after a period so I adapted to that. My typing speed increased when I learned to touch type and I do adhere to the single space rule.
In our typing classes, it was the other away around. We were deducted ten points if you did not include two spaces after a period. After a while it was just automatic. It is still is. I don’t even think about it, my fingers “remember” the rule and by reflex include the two spaces. I’m not interested in going back as I mentioned in my post.
I was lucky to learn to type using all my fingers and not looking at the keyboard. As a matter of fact, we had a cover on top of the keyboard to block the view to the keyboard. Ever since, I don’t need to look at the keyboard. The same goes for an adding machine. I was pretty good crunching numbers with an electric adding machine without looking at the keyboard. I’m not as fast as I was while working, but with a few days of practice, I’m sure I could regain my previous speed.
Regards,
Omar.-
One space or two, as long as you aren’t spaced out when typing you will be fine. haha
I got to define the style guide for all our training manuals and my choice was two spaces. Microsoft word has a setting for 1, 2, or don’t check in their spell checker so they were ready for any rule. I learned typing in high school and 2 spaces was the rule there.
Many web applications routinely strip the extra spaces from any text so the 2 space rule gets overridden.
jim and nena
fort worth
Hi Jim & Nena:
To be candid with you, I don’t notice the difference between one space and two spaces when I write my blog posts in Lingua Franca. I just can’t see the “holes” in the document mentioned by the author of the article.
Anyway, I’ll keep using the two spaces as usual. I hope you don’t mind.
Take Care,
Omar.-
Hi Omar,
My two cents. As a graphic designer I can tell you that the writer of the article is exactly right. Typography design is an extremely consuming and detail-oriented craft with a tradition spanning centuries, and type designers can spend months or years perfecting the precise spacing between letters so that text flows in an aesthetically pleasing manner. And double spacing does “break” the intended design and text flow. Most readers don’t notice this, but some do.
At the end, though, it’s up to you. It’s not a life or death matter. No babies will be harmed. But from the point of view of a craftsperson who loves their craft, these little details are important. Other craftspeople are the same way. There are things a good cook or a good photographer would avoid doing even very few will notice, and they would feel compelled to educate others on the “correct” way. And at the end of the day, craft is good thing. It elevates standards.