Nor should we assume that just because typographers believe earnestly in the single space that their belief is held entirely in good faith. They’re drunk on the awesome power of their proportional fonts, and sure of the cosmic import of the minuscule kerning decisions that it is their lonely duty to make. Of course they don’t want lowly typists exercising opinions about letter spacing. Those people aren’t qualified to have opinions!
I thought Manjoo’s argument was weak, for many of the reasons Tom mentions, but that doesn’t change facts. Here’s a little-known law of graphic design:
The number of people wishing to fit a document onto the same or fewer number of pages as a previous edition of said document, despite the new draft being longer than the previous edition, is directly proportional to the number of people who turn in said document to their graphic designer with double spaces after every period.
Okay, maybe I made that up. But real talk: Double spaces are bad.