What is common knowledge in your field but shocks outsiders?

More than half the CO₂ emissions of the industrial age have been dumped into the atmosphere since 1990.

@davidho Bleeding is stanched, not staunched; two spaces after a period is now passé—one is correct; editors accept manuscripts with with errors and typos all the time—it’s the quality of the writing that counts.
@thelmadonna I know one person who still uses two spaces after a period, and I found that out two weeks ago. That was shocking.
@Sumocat Here’s a deeper dive on the issue of spacing after a period: https://cmosshoptalk.com/2020/03/24/one-space-or-two/ Editors will not reject a manuscript based on whether or not the writer has conformed to house style, which pretty much always specs a single space after a period, but they may go ahead and just change it. 🤓
One Space or Two?

It hasn’t reflected publishing standards since the Jazz Age. And it isn’t Chicago style. But some people continue to do it in their own documents—from manuscripts to emails. You’ll even see it occasionally on social media.

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