Nature is Metal
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wrote on 19 Oct 2023, 11:58 last edited by
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wrote on 22 Oct 2023, 22:08 last edited by
I've been up and down that road countless times. Cannot imagine why anyone would try to bicycle on it.
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wrote on 22 Oct 2023, 22:30 last edited by
A very sad frog tale told in one picture
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wrote on 22 Oct 2023, 22:43 last edited by
The act of giving birth always inspires awe.
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topic:timeago-later,13 days
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wrote on 5 Nov 2023, 08:26 last edited by taiwan_girl 11 May 2023, 08:27
You should be able to watch without being a facebook member. (I am not and was able to watch.)
Anyway, a bear in Yukon captured on a trail camera.
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wrote on 5 Nov 2023, 19:23 last edited by
@Horace said in Nature is Metal:
A very sad frog tale told in one picture
That’s what he gets for skipping arm day.
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topic:timeago-later,12 days
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wrote on 17 Nov 2023, 15:35 last edited by
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wrote on 17 Nov 2023, 19:16 last edited by
Hot woman French-kissing wolves. Go to 3:00
Link to video -
topic:timeago-later,10 days
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wrote on 27 Nov 2023, 19:07 last edited by
Sure is. Sitting in my office watching a Red-tailed Hawk chowing down on a squirrel. I doubt the squirrel was quite dead before he started eating him.
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topic:timeago-later,19 days
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wrote on 17 Dec 2023, 05:00 last edited by
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wrote on 17 Dec 2023, 14:40 last edited by
If I were to start another aquarium....
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wrote on 22 Dec 2023, 22:52 last edited by
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wrote on 22 Dec 2023, 22:58 last edited by
That is wild.... and gross.
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wrote on 23 Dec 2023, 03:09 last edited by
We have two possibilities - evolution or intelligent design. The hideous grossness of that seems beyond what could reasonably occur by random chance.
Which leaves us with the conclusion that The Creator is one sick fucking puppy.
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We have two possibilities - evolution or intelligent design. The hideous grossness of that seems beyond what could reasonably occur by random chance.
Which leaves us with the conclusion that The Creator is one sick fucking puppy.
wrote on 23 Dec 2023, 06:37 last edited by@Doctor-Phibes said in Nature is Metal:
We have two possibilities - evolution or intelligent design. The hideous grossness of that seems beyond what could reasonably occur by random chance.
Natural selection is anything but random.
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topic:timeago-later,2 months
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wrote on 15 Feb 2024, 01:51 last edited by
A lioness and her cubs were enjoying a meal in a tree when a clan of hungry hyenas arrived and surrounded the tree in hopes of a helping of leftovers.
One of the cubs inexplicably jumped down from the tree—an apparent attempt to flee the scene—and was instantly surrounded by the hyenas and their snapping jaws.
Link to videoThe mother lion recognized the threat of losing her cub to the hyenas, dropping the impala carcass from the tree and jumping to the ground to confront the hyenas.
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@Doctor-Phibes said in Nature is Metal:
We have two possibilities - evolution or intelligent design. The hideous grossness of that seems beyond what could reasonably occur by random chance.
Natural selection is anything but random.
wrote on 15 Feb 2024, 08:49 last edited by Klaus@jon-nyc said in Nature is Metal:
@Doctor-Phibes said in Nature is Metal:
We have two possibilities - evolution or intelligent design. The hideous grossness of that seems beyond what could reasonably occur by random chance.
Natural selection is anything but random.
But the generation of variants is, to a degree, random. I think "genetic algorithms", for which randomness is essential and which are inspired by evolution, are a great illustration of how randomness can lead to highly sophisticated structures.
Check out this little animation of "ant colony optimization", which is about finding paths (to "food") by basically just walking around randomly, with no central control. It's a very simple but fascinating algorithm:
Here's the idea:
Link to videoAnts (initially) wander randomly, and upon finding food return to their colony while laying down pheromone trails. If other ants find such a path, they are likely not to keep travelling at random, but instead to follow the trail, returning and reinforcing it if they eventually find food.
Over time, however, the pheromone trail starts to evaporate, thus reducing its attractive strength. The more time it takes for an ant to travel down the path and back again, the more time the pheromones have to evaporate. A short path, by comparison, gets marched over more frequently, and thus the pheromone density becomes higher on shorter paths than longer ones. Pheromone evaporation also has the advantage of avoiding the convergence to a locally optimal solution. If there were no evaporation at all, the paths chosen by the first ants would tend to be excessively attractive to the following ones. In that case, the exploration of the solution space would be constrained. The influence of pheromone evaporation in real ant systems is unclear, but it is very important in artificial systems.
The overall result is that when one ant finds a good (i.e., short) path from the colony to a food source, other ants are more likely to follow that path, and positive feedback eventually leads to many ants following a single path
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wrote on 16 Feb 2024, 02:36 last edited by
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@jon-nyc said in Nature is Metal:
@Doctor-Phibes said in Nature is Metal:
We have two possibilities - evolution or intelligent design. The hideous grossness of that seems beyond what could reasonably occur by random chance.
Natural selection is anything but random.
But the generation of variants is, to a degree, random. I think "genetic algorithms", for which randomness is essential and which are inspired by evolution, are a great illustration of how randomness can lead to highly sophisticated structures.
Check out this little animation of "ant colony optimization", which is about finding paths (to "food") by basically just walking around randomly, with no central control. It's a very simple but fascinating algorithm:
Here's the idea:
Link to videoAnts (initially) wander randomly, and upon finding food return to their colony while laying down pheromone trails. If other ants find such a path, they are likely not to keep travelling at random, but instead to follow the trail, returning and reinforcing it if they eventually find food.
Over time, however, the pheromone trail starts to evaporate, thus reducing its attractive strength. The more time it takes for an ant to travel down the path and back again, the more time the pheromones have to evaporate. A short path, by comparison, gets marched over more frequently, and thus the pheromone density becomes higher on shorter paths than longer ones. Pheromone evaporation also has the advantage of avoiding the convergence to a locally optimal solution. If there were no evaporation at all, the paths chosen by the first ants would tend to be excessively attractive to the following ones. In that case, the exploration of the solution space would be constrained. The influence of pheromone evaporation in real ant systems is unclear, but it is very important in artificial systems.
The overall result is that when one ant finds a good (i.e., short) path from the colony to a food source, other ants are more likely to follow that path, and positive feedback eventually leads to many ants following a single path
wrote on 16 Feb 2024, 09:33 last edited by@Klaus said in Nature is Metal:
@jon-nyc said in Nature is Metal:
@Doctor-Phibes said in Nature is Metal:
We have two possibilities - evolution or intelligent design. The hideous grossness of that seems beyond what could reasonably occur by random chance.
Natural selection is anything but random.
But the generation of variants is, to a degree, random. I think "genetic algorithms", for which randomness is essential and which are inspired by evolution, are a great illustration of how randomness can lead to highly sophisticated structures.
Ok, but natural selection is downstream from the (epistemically) random process of mutation. Like the reward mechanism of food discovery is downstream from the pseudo-random movement of the ants.