J.K. Rowling uses kindness to shut down a mansplainer who told a woman she didn't actually write a book

The term mansplaining came from an author who had a man explain her own book to her. Now, men are explaining not just the contents of books ... but the act of writing a book itself.

Author Laura Kalbag shared on Twitter on Saturday that her new book Accessibility for Everyone, about the accessibility of websites to users, was coming out soon.

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Twitter user Erik Spiekermann responded in the most pedantic way possible.

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"Actually, you wrote a text," he tweeted at Kalbag. "It took a few other people & skills to make that into a book."

Kalbag, a first-time author, responded kindly.

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But others on Twitter took Spiekermann to task for one of the worst "Actually..."'s of all time.

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More importantly, people on Twitter—including one J.K. Rowling—congratulated Kalbag for her professional milestone.

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When J.K. Rowling and Roxane Gay tell you to be proud of your book, you've won. Accessibility for Everyone, available soon.