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# The Bizarre Behavior of Rotating Bodies, Explained

youtube.com/watch?v=1VPfZ_Xzis

![](i.ytimg.com/vi/1VPfZ_XzisU/mqd)

- Dzhanibekov effect
- Tennis racket theorem
- intermediate axis theorem

Video of the Veritasium guy. Very well done.

Now, I am not a physicist, so discovering these is fascinating.

Gosh, you all seem very shy about sharing your yarnybits :D

Fine, here's some of mine! On the odd occasion when the mood strikes me I like crocheting vintage doily patterns, but with sewing thread in bright colours and a 1.5mm crochet hook. These are all about 40cm diameter.

You can find loads of these patterns for free here:

freevintagecrochet.com/doilies

#crochet #vintage

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@ry@mas.to Your home instance is mas.to. With this image, mast.o would be more fitting.

@academicalnerd
Re interesting stuff/mornings vs. nights: that perspective changes quickly with age. Enjoy!

@Trojaner Very nice!

See, and suddenly there's a tiny bit more positivity in the world.

... and people keep saying that social networks are bad for your health...

# Terminal lucidity

theguardian.com/society/2021/f

Terminal lucidity is a phenomenon, when people shortly before dying, often after a long period (even years) of dementia, or other cognitive disability "snap into" their consciousness and become perfectly aware of their surroundings, their mental world and people around. They start to take part in conversations with their relatives/caregivers and their memory refreshes.

This is quite fascinating. Also, it provided a data point: if a dying relative with dementia, or a similar conditions suddenly becomes lucid, it well might be the last few days.

There is a link to a journal paper:

> **Paradoxical lucidity: A potential paradigm shift for the neurobiology and treatment of severe dementias**
> Mashour et al.
> _Alzheimer's & Dementia_ Volume 15, Issue 8, August 2019, Pages 1107-1114

## Abstract

> Unexpected cognitive lucidity and communication in patients with severe dementias, especially around the time of death, have been observed and reported anecdotally. Here, we review what is known about this phenomenon, related phenomena that provide insight into potential mechanisms, ethical implications, and methodologic considerations for systematic investigation. We conclude that paradoxical lucidity, if systematically confirmed, challenges current assumptions and highlights the possibility of network-level return of cognitive function in cases of severe dementias, which can provide insight into both underlying neurobiology and future therapeutic possibilities.

# Gravitrax is just fun

I hope to never get too old to be bored by these things...

@Serpent27 Yeah, and bread is bad for your skin too.

Maybe broken, it still works for many workflows (e.g., GPG keys on Yubikey used as ssh keys for remote access and signing messages, etc.). It's easier to fix a widely deployed solution than to replace with a new shiny thing. Anyway: sequoia-pgp.org/

@hellquist Pure envy on my side. I have to skip skiing this year... Sad.

Enjoy there!

BTW, the whole channel of this guy is full of great stuff. Again and again I am amazed why I never heard of such amazing things before. There's so much interesting stuff out there...

youtube.com/channel/UCHnyfMqiR

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# Why Machines That Bend Are Better

![](i.ytimg.com/vi/97t7Xj_iBv0/mqd)

Procrastinating again... Anyway, this is cool. A series of mechanical devices (either 3D printed, or made of plastic/extruded) which have no hinges and typically a monopiece. Great mechanics and great engineering. I did not even knew such stuff existed.

youtube.com/watch?v=97t7Xj_iBv

Indila - S.O.S

youtube.com/watch?v=m65jhGwtWr

Some easy French pop into my head this morning.

Sometimes I am myself surprised by the mix and breadth of music styles I listen to from metal. Effectively almost anything. Whatever. As far as I enjoy it, there's nothing wrong with light entertainment.

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