If I want to take notes on code in various arbitrary languages I would use emacs because I can evaluate them all in the same note file. I think there are other

If I want to take notes on code in various arbitrary languages I would use emacs because I can evaluate them all in the same note file. I think there are other editors or systems that give one a multi-language notebook. But having already learned emacs, org, and org's code blocks, the marginal cost of using something else is much higher. For me, sunk cost isn't the issue. It's the marginal cost of doing the next thing. And that's why I chose to sink so much effort (cost) into learning emacs - I knew it would pay off for the rest of my life.