Gall's Law almost always deserves to be repeated and higher up in HN threads, and this is another instance where I wish I could upvote more than once.

Here, Gall's Law provides an accurate explanation for why so many of us have returned to paper, pencil, and brain cells. It is also apropos of your comment's sibling comment regarding how tech folks frequently and mistakenly believe that they can improve on a solution that has worked well for thousands of years of human civilization (e.g., paper + writing instrument + human thought) in just a few weeks. For all the talk of Emacs's being relatively ancient and mature software, handwriting is orders of magnitude more mature and sanded down.

With software to "solve" the problems of thinking, remembering, linking ideas, or deciding what to do … now you have two problems, as we say.