That's a fair point - but most of these threads focus on comparing systems rather than discussing whether they are necessary in the first place. I can see how folks with ADHD or similar challenges would benefit from a TODO app (or similar).

I'm more curious about a broader question: at what point does life complexity actually require a formal system versus just mental tracking? Tech people are, for the most part, the only people I encounter actively using and iterating on their TODO solutions, and I am skeptical that in general they lead more complex lives.