That comes from typewriters, before kerning was a thing. Each key press moved the paper an equal distance, so every single character was evenly spaced. Even narrow characters like i or l had the same amount of space on each side of them. Monospaced font is easier to read when sentences end with a double space. But with modern kerned fonts, the double space is pointless.
Phones sub in a period for simplicity, so you don’t need to reach for the period key. It doesn’t actually include the double space at all; it removes the first space and replaces it with a period. If you’re “supposed” to double space after each sentence, why does your phone remove that first space?
mike_wooskey@lemmy.thewooskeys.com 1 day ago
“Supposed to”? That originated back before desktop publishing existed, when typed communication (as in typewriters) were only monospace, and adding 2 spaces between sentences made text easier to read.
In modern times (as in the past 30 years or so, i think), while adding 2 spaces between sentences might remain as a preference or in a style guide, you haven’t been “supposed to” do it.
Maybe now that markdown is so commonplace, it’ll make a return?