Today I Learned #3: There's a wiki for everything!

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TIL whales learned to avoid whaling boats

“Sperm whales have a traditional way of reacting to attacks from orca,” notes Hal Whitehead, who spoke to the Guardian from his house overlooking the ocean in Halifax, Nova Scotia, where he teaches at Dalhousie University. Before humans, orca were their only predators, against whom sperm whales form defensive circles, their powerful tails held outwards to keep their assailants at bay. But such techniques “just made it easier for the whalers to slaughter them”, says Whitehead.
Over a few years they learned to communicate the threat within their attacked groups, abandoning their usual defensive formations and whales swam upwind to escape the hunters’ ships, themselves wind-powered. Within just a few years, the strike rate of the whalers’ harpoons fell by 58%.

Whale culture is many millions of years older than ours. Perhaps we need to learn from them as they learned from us.
Squinting at the graph, it looks like the hit rate dropped to close to zero after exactly 5 years, and then climbed (as the whalers adapted, slower than the whales?)

Grundiad Paper
 
TIL whales learned to avoid whaling boats

“Sperm whales have a traditional way of reacting to attacks from orca,” notes Hal Whitehead, who spoke to the Guardian from his house overlooking the ocean in Halifax, Nova Scotia, where he teaches at Dalhousie University. Before humans, orca were their only predators, against whom sperm whales form defensive circles, their powerful tails held outwards to keep their assailants at bay. But such techniques “just made it easier for the whalers to slaughter them”, says Whitehead.
Over a few years they learned to communicate the threat within their attacked groups, abandoning their usual defensive formations and whales swam upwind to escape the hunters’ ships, themselves wind-powered. Within just a few years, the strike rate of the whalers’ harpoons fell by 58%.

Whale culture is many millions of years older than ours. Perhaps we need to learn from them as they learned from us.
Squinting at the graph, it looks like the hit rate dropped to close to zero after exactly 5 years, and then climbed (as the whalers adapted, slower than the whales?)

Grundiad Paper

Mum was born on a whaling station and great uncle died on one.

Stepbrother filleted a pilot whale in 90's on a fishing boat.
 
You should watch the videos sometimes, instead of only having them in the background ;).
(I was also confused when I saw Alissa the first time, but at least that was a while ago lol)
Why? Is she worth looking at? :p
 
this Coyote , Acme Corporation and the Roadrunner thing , which ı have always liked ? Some guys on the Turkish internet have made rough calculations with a printscreen or something , distance and timed and whatnot and supposedly the speed of the Roadrunner comes to 2257 kilometers per hour .
 
But... would that even be true?

I'm a long way from total familiarity with the lore, but aren't replicators based on the same Treknology ("Heisenberg compensators", ha-ha!) as the transporter-beam? If so, running anything through a transporter could presumably produce a (storable) record of its matter-pattern, including the radioisotopic decay-state of each individual atom, that would then allow that object to be reproduced at will in any replicator (in much the same way — but with vastly more sophistication — that 3D-printer object-templates can currently be downloaded and used). How would anyone then be able to distinguish a genuine/ original/ "valuable" work of art, e.g. Da Vinci's Mona Lisa, from a perfectly-replicated copy of it?

So there could no longer be any such thing as a unique collectible oddity or rarity, at least not once the original had been analysed — because any would-be counterfeiter wouldn't make just one copy, he'd make as many as the 'market' wanted! And without any possible means of authentication, the social cachet inherent owning such an object then simply ... disappears.

Absolutely true for the technical part :)

But with art for example: some artists can make close to perfect copies already of famous master works.
They can do that even better for much of the older paintings like Rembrandt or Da Vinci !
It is not only the varnish that gets more brownish over time, it is also the colors themselves that discolor over time. Da Vinci experimented a lot with that like most masters. Art was in those days to a higher degree craftmanship.
If you take the color yellow, the kind of yellow you use for lemons, on Dutch paintings in the 16th, 17th century, we do not see the splendor anymore of that color as it was when painted. But at the moment of creativity and the new owner proud on it, the color was perfect. And other colors were tuned to it, to match or contrast to it. The color affected, the composition affected.

And despite that... people want to see the original as it is when they look. Up to even the point that some museums are against replacing the old brownish varnish with new transparant varnish. As if the original is not original anymore when there is no authentic decay !

On top people love to hear something special about the creation process, some apparent flaw or oddity that makes possession or in a museum looking at it even more special.
Like for example the famous bronze statue "Perseus with the head of Medusa" made by Benveneto Cellini.
Cellini was always drinking and feasting too much in a chaotic adventurous life and had sold much of the expensive tin (bronze is tin + copper), he got for that statue, to pay his bills. The issue is that when you do not add enough tin to copper, the melt needs a higher temperature AND starts solidifying during casting, pouring the melt in your wax-gypsum mold, at a lower temperature.
During the melting Cellini had to throw all his tin tableware and cutlery in the melting pot to get something decent, but when pouring that into the mold the bronze solidified a bit too early and one of the toes is not complete.

And that is still a boring nice story compared to the many erotic-romantic stories of models, including highranking nobility etc posing secretly naked, being a mistress of an artist in between such romantics. A story becomes more than a just a story when imagination is encouraged to create your own version of more. Who was that lady of that Rubens or Picasso painting ? Did Van Gogh really killed himself the same evening he finished that painting ?
etc
Is that really the same sword that Genghis Khan used in that battle ?

Mass production, also by the process you describe, leads I think to a drive for identity and true genuine authenticity
 
Here an example of something very original unique in the anonymous global sphere of electrons so easily copied.
The first Tweet ever of a Twitter co-founder Jack Dorsey. He sold it for 2.9 million USD (as NFT, Non-Fungible Token) and gave the money to Covid aid in Africa.

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TIL that (non-sailing) ships turn to the right if not under power. If a ship totally loses power, the screw still drags through the water, and because the blades are tilted (like a fan, same thing basically), if there is any current flowing over the blades, it will gradually turn the ship to the right, or starboard.
 
TIL that (non-sailing) ships turn to the right if not under power. If a ship totally loses power, the screw still drags through the water, and because the blades are tilted (like a fan, same thing basically), if there is any current flowing over the blades, it will gradually turn the ship to the right, or starboard.

In that they are like ancient hoplites. Although in the case of hoplites, that was happening because the next man's shield is to the right of you: if you start feeling fear, you automatically try to cover yourself as much as you can.
This was part of the calculations for the glorious victory of Thebes over Sparta, in the battle of Leuktra.
 
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In that they are like ancient hoplites. Although in the case of hoplites, that was happening because the next man's shield is to the right of you: if you start feeling fear, you automatically try to cover yourself as much as you can.
This was part of the calculations for the glorious victory of Thebes over Sparta, in the battle of Leuktra.
A couple years ago I read Legion vs Phalanx, and that author talked about how the phalanxes would have their strongest and most steely soldiers on the right flank, rather than in the middle of the formation, because that was the anchor point for the overlapping shields. If those guys lost their nerve or got knocked out of position, the whole thing would unravel.
 
A couple years ago I read Legion vs Phalanx, and that author talked about how the phalanxes would have their strongest and most steely soldiers on the right flank, rather than in the middle of the formation, because that was the anchor point for the overlapping shields. If those guys lost their nerve or got knocked out of position, the whole thing would unravel.

Yes, at least with Sparta this was always the case. Which is why Thebes deliberately placed a massively deeper phalanx against the spartan right, leaving the rest very weak. It included the elite regiment of Thebes, the "Sacred Legion".

Should be noted, though, that Sparta had fewer soldiers in that battle (as in every battle, pretty much). The spartans didn't believe anyone could defeat them, even if they were outnumbered. Same happened against Alexander's backup team (when he campaigned in Asia and Sparta revolted and lost again).
 
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TIL that (non-sailing) ships turn to the right if not under power. If a ship totally loses power, the screw still drags through the water, and because the blades are tilted (like a fan, same thing basically), if there is any current flowing over the blades, it will gradually turn the ship to the right, or starboard.
I knew there was an advantage to paddle ships other than cuteness!
 
I knew there was an advantage to paddle ships other than cuteness!
Paddle ships are going to turn a lot more, with that paddle stuck in the water on one side?
 
Why would you ever have the one paddle on one side? You'd be moving in circles like Bart Simpson when he sold his soul.

The two types of paddle wheel steamer are stern-wheeler, with a single wheel on the rear, and side-wheeler, with one on each side.
(source)​
 
Why would you ever have the one paddle on one side? You'd be moving in circles like Bart Simpson when he sold his soul.

The two types of paddle wheel steamer are stern-wheeler, with a single wheel on the rear, and side-wheeler, with one on each side.
(source)​
Oh yeah. I am not sure where my idea came from that they were only on one side.
 
TIL that this year it's the 700th anniversary of Dante Alighieri's death. We get even more documentaries than usual.

I was surprised to know that there's no standard edition of the Divine Comedy. Ol' Dante kept publishing/sending chapters out all the time, while in his exile he moved from place to place and left notes and drafts behind, with the result that revisions and errors made their way into the mare magnum of sources. Heard a juicy tidbit of how this way "peTTatrici" [female hemp workers] became confused with "peCCatrici" [female sinners, interpreted even by his sons as practicing the Oldest Profession].

And I was genuinely surprised that after 21 generations his bloodline is actually thriving.
 
I'm more surprised that it's "only" 21 generations. That's a a sustained average of 35 years from birth to procreation.
 
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