This is a well-referenced essay, drawing the on writing of David Parnas [1], Peter Naur [2], and Zach Tellman [3].
As software developers we’re intimately familiar with these ideas. But the industry still treats it as “folk knowledge”, despite decades of academic work and systemization attempts like the original Agile.
We really need more connective work, relating the theoretical ideas to the observed behavior of real-life software projects, and to the subsequent damage and dysfunction. I liked this essay because it scratches that itch for me. But we need this work to go beyond personal blogs/newsletters/dev.to articles. It needs to be recognized & accepted as formal “scientific” knowledge, and to be seen and grokked by industry and corporate leadership.
I’m a violinist (amateur but play regularly). When I have an important note, which is held for a while and needs vibrato, I frequently decide to shift my left hand position so that my middle finger is responsible, rather than the index finger. It feels stronger, easier to nail the intonation (pitch) with precision, and freer to perform the desired type of vibrato. (String players do vibrato by wiggling the left hand finger, which affects the pitch and overtones / oscillation modes of the string.) In fact, I tend to avoid using the index finger on notes that require vibrato.
That preference might be explained here, by the precision/strength combination. I tried holding a hammer as described in the author’s hammer exercise, and there’s similarity, though it requires much more weight-holding. The left hand doesn’t hold the weight of the violin (consider a cello or a guitar with shoulder strap), but a little grip strength is required to securely hold down the string, especially with vibrato.
Overall, fascinating article. I feel quite motivated to read more on hand anatomy and biomechanics.