In postulate, blog posts start out as notes to yourself about what you learn, and mature into public-facing blog posts, resulting in a kind of blog that feels like an active, learning journal

No, no! They aren’t a record of my thinking process. They are my thinking process. I actually did the work on paper.

Feynman argued that writing was not merely a record or trace of what he thought, but rather the medium through which he thought that enabled him to think more consciously.

Writing helps us think better because it allows us to think across time.

The things you used most recently would be open, at your fingertips, right where you left them. The entries you recently updated in your encyclopedia would lay near your right hand, ready to be picked back up. A small stack of open books to your left, lying opened to exactly where you were last reading.

That half-finished project? The books would still lay on the table, cracked open to key passages, ragtag bookmarks peeking over tops of pages. The whiteboard sketch, littered with sticky notes, would be there on the wall, the lines reminiscent of a spider’s web.

Every time we write, we open a small room for our thoughts. Rather than trying to hold them all in our minds, we lay them out, in the order in which they came to us, so that we can jump between them and explore them at our leisure. But every time we publish or every time we stop writing, we close the door into that room, and start anew with a fresh room.

He defines a tool as something that takes an existing workflow, and makes it more efficient

A medium, on the other hand, gives us new agency or power by which we can do something we couldn’t do before.