[society-by-contract]

This is one of the most common mistakes

One of the most? Can there be more than one of a superlative? No! Better construction is, "One of the more" or just sin bodly and say, "the most." The qualified superlative is junk. Here's a big one for the my fellow Freepers: One or two spaces after a period?

[Tenacious 1]

Here's a big one for the my fellow Freepers: One or two spaces after a period?

Always two spaces after a period to end a sentence. One space after a period for abreviation.

[Daffynition]

No longer necessary to put 2 spaces after each period. Save the key stroke.

Steve's tips on periods: Place periods after bullet points that express a complete thought. Fragments don't get one. If you choose to ignore this, at least be consistent throughout your document or PowerPoint slides. Periods make horrible bullet points.  — Use an emdash (see below) or double hyphen (see Dash below). — Or try this: turn on the Number lock key (Num Lock);     then type Alt +0183 > Enter. You'll get a dot. No periods... ...after contractions | don't ...ordinal numbers | 1st | 2nd | 3rd | 4th ...nicknames | Barb ...shortened words | taxi, ad ...acronyms | KPRC, TV ...numeral after names | Henry VII ^ top |

[Colonel_Flagg]

Here's a big one for the my fellow Freepers: One or two spaces after a period?

I learned two, but commonly accepted business style is now one space after a period.

[dsrtsage]

That Allanis Morrisett song “Isn’t it Ironic, Don’t ya Think”
song always annoyed the hell out of me because not one thing in it is actually ironic.

I always thought she was just trying to show how intellectual she was by using a “big” word, but the irony was she didn’t understand the definition of the word.

[brothers4thID]

There should be two spaces after a period.

One of my pet peeves is the em dash vs the en dash.

Johnny wants the red car — fire-engine-red if he can find it — instead of the blue car.

Of course, this is made much harder by the lack of a true em dash key on modern keyboards.

[Poser]

“One or two spaces after a period”

If it’s 1969 and you are taking a typing course on a manual typewriter, two spaces.

If you are using a modern word processor with proportional type, one space.

I think I got this from a book by Robert Parker, Looking Good in Print, but I haven’t read it for twenty years so I’m not sure I remember correctly.

[Bigg Red]

How about “most unique”? “A myriad of”?

As to your question regarding on or two spaces after a period. I am pretty sure that I learned in my high school typing class in the 1960s to make two spaces after a period, after a colon and after a semicolon.

As a matter of fact, I usually still do that — I just did it above! — but Microsoft Word usually flags it as an error.