Why is the liver so weirdly regenerative?(dynomight.substack.com) |
Why is the liver so weirdly regenerative?(dynomight.substack.com) |
The Greeks chose liver because it symbolized the defiance Prometheus had against gods.
https://www.science.org/content/blog-post/no-heart-cancer-th...
In any case, what would you expect from such a platform? That would help with recomendations.
We can expect evolution to do the right thing for the genes. Not for us.
That's it. That's the entire thing. Plus some nuance about things that self-replicate faster than other things...
It occurs at all levels. Amyloid protein in Alzheimer's patients is self-replicating. So are cells. So are individual parts of cells. Sometimes things replicate by being parts of a larger thing that replicates, sometimes they don't. It's all one big chaotic tangled mess with no particular purpose or design. Human cells evolve, so do humans, so do human societies. So do rocks.
I greatly resent having to be a biological organism and subject to all the poor engineering and design decisions that entails.
And then this:
Brains. After you reach adulthood, neurons don’t divide. If some of your neurons die—which happens every day—then they’re gone. If you get a brain injury, the other neurons will try to “learn around” the injury, but the neurons themselves are never replaced.
Loss of neurons isn't disastrous as long as it's not too many. Babies are born with several times more neurons than children have, and spend a few months letting all the useless ones die. Apparently it's better to start with a random tangle and prune it to shape (like cutting a box hedge) than to make a hedge grow in a box shape to begin with.
And IIRC brains can grow more neurons under some circumstances (certain drugs?) - they just normally don't.
https://www.sciencedirect.com/science/article/pii/S193459092...