Surprised no one has mentioned doing this in a physical notebook with a pen. I started doing what the author describes a long time ago to document bugs to come back to later. I soon realized it's just a good way to keep my thoughts organized and be more productive. I tried doing something similar with a text editor but grew tired switching screens or tabs. A notebook is also a bit more accessible than a laptop when y…
I rather have files that I can understand later, and easily grep as a bonus...
(I do admit that crossing done tasks on a piece of paper feels very good.)