I’ve encountered this idea multiple times before finally coming to the conclusion that writing is, indeed, thinking.
I first encountered it from Dr. Jordan B. Peterson, who said these words:
“The best way to teach people critical thinking is to teach them to write.”
I then got it from David Perell who said, “Re-writing is re-thinking.”
Here’s a quick summary of my highlights from David Perell, Writing online is a superpower:
Transclude of David-Perell,-Writing-online-is-a-superpower#^2cefb7
Re-writing is thinking, no matter through which angle we look at it.