Because you need your brain for more important things than storing clutter.
Yes! I participated in the original course before it became a book. I use a Zettlekasten system on obsidian, I take notes on scraps of paper and every so often collect them into obsidian
Yes! I participated in the original course before it became a book. I use a Zettlekasten system on obsidian, I take notes on scraps of paper and every so often collect them into obsidian