He uses two spaces after every period. Which—for the record—is totally, completely, utterly, and inarguably wrong.

I’ve been telling everyone this for how long? Years I tell you, freaking motherloving years. And how people would bitch—“That’s what we were taught at typewriting school, so it must be right!”—nope, it was wrong, wrong, wrong.

But, and it’s a big but, it’s not completely wrong. When the fount you are using has proportional spacing (as in, each letter uses it’s own width, roughly speaking) you never, never, ever use two spaces. On the other hand, if the fount is monospaced (every letter takes up the same width) you can, if you must, use the double space. You’ll still be wrong, but you can get away with it.

If you want to get really nuts about it, you should use an m-space with proportional founts (an m-space being a space the width of an “m"), as opposed to an n-space, used between words (you can guess how wide an n-space is, right?)

Sorry, I think I just threw up in my pants a little.

If you’re not a developer/designer, there’s very little chance you’ll use a monospaced font anyway. Don’t confuse people, Dimmer. ONE SPACE NOT TWO!

I once had a really douchy financial advisor review a brochure I’d created. He made some erroneous comment about brand regulations, and when I gently redirected him he took umbrage but reluctantly agreed. Then he (irritated now) said, “Well you know what you definitely did wrong. It’s two spaces after every period. Don’t even TRY to tell me I’m wrong about that because my MBA came from Princeton.”

So I didn’t argue. Idiot asshole.

Indeed, even using monospaced stuff, you never go wrong with a single space. So yeah, treat that rule as golden.

I will take the high road, and not comment.