I read this with pleasure, right up until the bit about the ants. Then I saw the note from myself at the end, which I had totally forgot writing seven years ago. I probably first encountered the article via HN back then as well. Thanks for publishing my thoughts!
The ants argument feels rather like a retelling of Zeno's Paradoxes.
https://en.wikipedia.org/wiki/Zeno%27s_paradoxes