Reply to Andy https://forum.zettelkasten.de/discussion/comment/16865#Comment_16865
Andy, I'll take you at your word. You're right that none of it requires extraordinary genius--though many who seem to exhibit extraordinary genius do have variations of these practices in their lives, and the largest proportion of them either read about them or were explicitly taught them.
With these patterns and practices being so deeply rooted in our educational systems for so long (not to mention the heavy influences of our orality and evolved thinking apparatus even prior to literacy), it's a bit difficult for many to truly guarantee that they've done these things independently without heavy cultural and societal influence. As a result, it's not a far stretch for people to evolve their own practices to what works for them and then think that they've invented something new. The common person may not be aware of the old ideas of scala naturae or scholasticism, but they certainly feel them in their daily lives. Commonplacing is not much different.
By analogy, Elon Musk might say he created the Tesla, but it's a far bigger stretch for him to say that he invented a new means of transportation, or a car, or the wheel when we know he's swimming in a culture rife with these items. Humans are historically far better at imitation than innovation. If people truly independently developed systems like these so many times, then in the evolutionary record of these practices we should expect to see more diversity than we do in practice. We might expect to see more innovation than just the plain vanilla adjacent possible. Given Margolin's age, time period, educational background, and areas of expertise, there is statistically very little chance that he hadn't seen or talked about versions of this practice with several dozens of his peers through his lifetime after which he took that tacit knowledge and created his own explicit version which worked for him.
Historian Keith Thomas talks about some of these traditions which he absorbed himself without having read some of the common advice (see London Review of Books https://www.lrb.co.uk/the-paper/v32/n11/keith-thomas/diary). He also indicates that he slowly evolved to some of the often advised practices like writing only on one side of a slip, though, like many, he completely omits to state the reason why this is good advice. We can all ignore these rich histories, but we'll probably do so at our own peril and at the expense of wasting some of our time to re-evolve the benefits.
Why are so many here (and in other fora on these topics) showing up regularly to read and talk about their experiences? They're trying to glean some wisdom from the crowds of experimenters to make improvements. In addition to the slow wait for realtime results, I've "cheated" a lot and looked at a much richer historical record of wins and losses to gain more context of our shared intellectual history. I'm reminded of one of Goethe's aphorisms from Maxims and Reflections "Inexperienced people raise questions which were answered by the wise thousands of years ago."