One Space Rule
I learned in grade school as many have to place two spaces between sentences and it has since been changed to one. This isn’t a huge issue. It’s all about forming a new habit of hitting that space bar once instead of twice. However, I did wonder why the modification was made in the first place. After a bit of research, this is what I discovered:
The original rule was developed during the times of the typewriter. Word processing programs generally use proportionally spaced fonts meaning an “i” takes up the same amount of space as “m”. Typewriters, on the other hand, used non-proportional fonts. So, there was a need for the extra space to help our minds separate the sentences. Basically, since we don’t use typewriters much anymore, there’s no need for the extra space.
Another reason is that some people, including publishers, like to justify text which means Microsoft Word will put little spaces between the words to stretch out the text so that the right-hand margin is straight. including your “extra” spaces. The result can look very ugly. If you have extra spaces in the middle of sentences, Word stretches the text in each line, including your “extra” spaces. The result can look very ugly.
The Bottomline: Save the double spaces for typewriting or personal correspondence. Otherwise, adopt the one space rule in your everyday writing life if you haven’t already.