Learning in Public

Writing does not help us learn; formulating new ideas in our own words IS how we learn.
Sharing anything with others requires a certain degree of polish to the ideas. This refinement is due to the idea of having stood up to a greater deal of internal scrutiny in preparation for external scrutiny. This is one way where the fear of rejection actually works in our favor, pushing us to solidify our thoughts and think of arguments that could be raised against them.
Showing others your work is a more accurate and honest representation of your capabilities than a CV.
Writing involves not just the act of writing but the researching, the reading, and the thinking done beforehand. In fact, the physical act of creating the first draft (which is what most people think of as "writing") is the easiest part of that process. If we don't write something down, we are, in effect, either claiming that our brain will remember it, which is foolish and short-sighted, or making a decision that the information isn't worth remembering.

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Document the problems you solved.
Try your best to be right, but don’t worry when you’re wrong. Repeatedly. If you feel uncomfortable or like an impostor, good. You’re pushing yourself. Don’t assume you know everything, but try your best anyway, and let the internet correct you when you are inevitably wrong. Wear your noobiness on your sleeve.
Learning in Public increases your Luck Surface Area.
Creating reusable/referenceable Open Source Knowledge helps you compound knowledge work + save keystrokes when helping people.
Having a Public Second Brain to grow drafts in public with lower expectations than blog/social media is inspiring to others - aka Working with the Garage Door Up.
One “monorepo” for all your notes frees you/your readers from having to remember where you put your notes + makes related notes more discoverable.

Publishing your current thoughts allows other minds to challenge you and alter/improve your ideas and worldview.
It makes you reflect when you write down your new ideas, concepts, and interpretations.
You end up with a portfolio of your efforts/skills/ideas
Like-minded people can find you even without interacting with your first brain.