2 Spaces After A Period

And yet people who use two spaces are everywhere their ugly error crossing every social boundary of class.
2 spaces after a period. The habit of using two spaces is a relic from the era of typewriters when typists spaced twice to more clearly define the end of a sentence. Very few style guides advise using two spaces after a period. The nation was rocked this week by a paradigm shattering study. Or an exclamation point.
Unless you are typing on an actual typewriter you no longer have to put two spaces after a period. Before computers and word processors were prevalent most people relied on typewriters. Or a question mark. Typing two spaces after a period is totally completely utterly and inarguably wrong.
The rule applies to all end punctuation. Science has definitively found that two spaces after a period in typed text provides the most efficient reading experience for. Nowadays very few style guides advise using two spaces. The publication manual of the american psychological association apa was the only style guide that overtly recommended two spaces after a period and even that long time holdout for two spaces changed its guideline to one space in its 2019 update.
Once considered an advanced form of technology themselves older typewriters were known to produce uneven or unpredictable line spacing. The apa chicago manual of style ap and us government printing office style manual all recommend a single space between sentences. Two spaces were once the norm double spacing after every period used to be standard.