Why is the liver so weirdly regenerative?
- ID
- 28370
- Status
- summarized
- Published
- 25 Sep 2026, 12:23 AM
- Fetched
- 25 Sep 2026, 10:17 AM
- Provider
- Hacker News
- Category
- dev-community
- Original URL
- https://dynomight.substack.com/p/liver
- Source URL
- https://hnrss.org/best
Summary
- Score
- 2.0
- Created
- 25 Sep 2026, 10:17 AM
- Tags
- Audience
- developers
What happened
A dynomight Substack essay, tagged by its author as a "speculative unifying theory of biology," asks why the liver regenerates while most other organs do not: donate half a liver and it regrows to full size and function in a few months, while kidneys decay permanently, gums recede irreversibly, and a donated kidney has a ~30% chance of rejection within 10 years despite lifelong immunosuppressants. It strings together supporting oddities — menopause being nearly unique to humans (with exceptions listed as killer whales, pilot whales, beluga whales, false killer whales, narwhals, and one chimpanzee population in Uganda), salamander leg regrowth, and telomeres running out after 50-70 cell divisions. The post hit 265 points and 158 comments on Hacker News.
Why it matters
There is no actionable takeaway here for developers, founders, or AI/ML work — it is a speculative biology essay with no tooling, policy, funding, or infrastructure angle for a Malaysian or SEA builder audience. Its only practical value is as a live example of a confident "unifying theory" post that reached the top of HN on reasoning alone, worth reading alongside the 158-comment thread that stress-tests it.
Discussion angle
Use it as a case study in how speculative, non-peer-reviewed writing earns 265 points on HN: ask the room which claims in the post are load-bearing (the 50-70 division telomere limit, the 30% ten-year kidney rejection figure) versus which are rhetorical, and whether your own team's write-ups separate those two the same way.