3 ms·

And where, exactly, does it store the information that it has already searched an area? and how does it avoid dedicating resources to re-searching it?

hinkley 2y ago
How do tree roots know whether they should fuse with other roots or not? How do plant leaves know to grow opposite of other leaves? How do stripes form on a tiger? Chemical gradients.
- interestica 2y ago
  I was at a fungus event yesterday (really) and they spoke a bit about patterns in nature and how they are similar to Turing Patterns. https://en.m.wikipedia.org/wiki/Turing_pattern https://en.m.wikipedia.org/wiki/Turing_pattern > ... arises due to the interplay between differential diffusion (i.e., different values of diffusion coefficients) of chemical species and chemical reaction.
  - hinkley 2y ago
    There’s an old bonsai trick to force a branch to appear by cutting or bruising the wood above the point so that the cells that differentiate into buds can no longer see the signal from the apical bud, which in species that have them, is telling the rest of the tree to give it all of the energy so it can outcompete other trees reaching for the canopy. Meanwhile if you prune the apical bud to try to keep the tree small, it will just elect another leader and keep growing on a side branch. I have a tree in my yard that got nibbled by insects when it was chest high. Killed the crown bud but not its two siblings. One of them won, then stood up straight and two years later you can barely tell.
    - saaaaaam 2y ago
      This is fascinating. Where could I learn more about these sorts of bonsai techniques? Is there a book or website that you would particularly recommend? I’ve always been intrigued by bonsai but if you do a basic web search it’s just people selling trash.
      - hinkley 2y ago
        Try Heron Bonsai on YouTube. I’m actually out of the hobby because I kill trees unless they’re in the ground.
        saaaaaam 2y ago
        Thank you!
timschmidt 2y ago
Maybe epigenetically in the gigabytes of nuclear material they move around from cell to cell through the mycelium? https://www.youtube.com/watch?v=y0uffu5XM-s https://www.youtube.com/watch?v=y0uffu5XM-s https://www.youtube.com/shorts/W85G9O9XY98 https://www.youtube.com/shorts/W85G9O9XY98

hinkley 2y ago

How do tree roots know whether they should fuse with other roots or not? How do plant leaves know to grow opposite of other leaves? How do stripes form on a tiger? Chemical gradients.

interestica 2y ago
I was at a fungus event yesterday (really) and they spoke a bit about patterns in nature and how they are similar to Turing Patterns. https://en.m.wikipedia.org/wiki/Turing_pattern https://en.m.wikipedia.org/wiki/Turing_pattern > ... arises due to the interplay between differential diffusion (i.e., different values of diffusion coefficients) of chemical species and chemical reaction.
- hinkley 2y ago
  There’s an old bonsai trick to force a branch to appear by cutting or bruising the wood above the point so that the cells that differentiate into buds can no longer see the signal from the apical bud, which in species that have them, is telling the rest of the tree to give it all of the energy so it can outcompete other trees reaching for the canopy. Meanwhile if you prune the apical bud to try to keep the tree small, it will just elect another leader and keep growing on a side branch. I have a tree in my yard that got nibbled by insects when it was chest high. Killed the crown bud but not its two siblings. One of them won, then stood up straight and two years later you can barely tell.
  - saaaaaam 2y ago
    This is fascinating. Where could I learn more about these sorts of bonsai techniques? Is there a book or website that you would particularly recommend? I’ve always been intrigued by bonsai but if you do a basic web search it’s just people selling trash.
    - hinkley 2y ago
      Try Heron Bonsai on YouTube. I’m actually out of the hobby because I kill trees unless they’re in the ground.
      - saaaaaam 2y ago
        Thank you!

timschmidt 2y ago

Maybe epigenetically in the gigabytes of nuclear material they move around from cell to cell through the mycelium? https://www.youtube.com/watch?v=y0uffu5XM-s https://www.youtube.com/watch?v=y0uffu5XM-s https://www.youtube.com/shorts/W85G9O9XY98 https://www.youtube.com/shorts/W85G9O9XY98