Perttu Kaijansinkko

Christian husband and father. General practitioner. In addition to medicine, my interests include history, politics, literature. Also in Latin: @perttuk_la.

[Perttu Kaijansinkko @perttuk]

@elina__hiltunen Jos liittyy nyt kirkkoon niin äänestämään meneminen ei onnistu ainakaan mitenkään automaattisesti, koska äänioikeutettujen luettelot on jo laadittu.

[Timo Pöyhönen @TimoPoyhonen]

Kirkon paletti on aivan sekaisin. Sääliksi käy.

https://t.co/wLu1WvZ2aK

[Perttu Kaijansinkko @perttuk]

@KVahakyla @PuolimatkaTapio Noitavaino on paremminkin yhteiskuntapsykologinen kuin uskonnollinen ilmiö; samankaltaista tapahtuu nykyaikanakin ihan maallistuneiden ihmismassojen toimesta. 1600-luvulla kirkko oli monesti *hillitsemässä* ihmisten noitavainopyrkimyksiä.

[Perttu Kaijansinkko @perttuk]

Maailman nuorin kuningas kuoli eilen, maailman toiseksi vanhin tänään.

[Perttu Kaijansinkko @perttuk]

#Talviturkki heitetty 🏊✅

[More Births @MoreBirths]

https://t.co/shwWc5e8f7

[Under Secretary of State Sarah B. Rogers @UnderSecPD]

“We” are the international consensus who care about freedom. You know — the one NATO member nations invoke when they want defense subsidies.

And “we” still agree on something: nations should apply their own sovereign laws. Which is why pathetic censorship flailing by foreign bureaucrats directed at American speech, on American platforms, protected by America’s First Amendment gets you sanctioned.

Sorry you can’t control the conversation anymore.

[Perttu Kaijansinkko @perttuk]

Kristittynä voisin kaivata ennakkovaroitusta tästä jumalankieltämisen kirvoittamasta tekeleestä…
Paula Vesala laati Suvivirteen sanat, joiden pitäisi kelvata kaikille – osaatko erottaa ne alkuperäisistä? https://t.co/AMhw4v0vdz

[Ihtesham Ali @ihteshamali]

A Norwegian neuroscientist spent 20 years proving that the act of writing by hand changes the human brain in ways typing physically cannot, and almost nobody outside her field has read the paper.

Her name is Audrey van der Meer.

She runs a brain research lab in Trondheim, and the paper that closed the argument was published in 2024 in a journal called Frontiers in Psychology. The finding is brutal enough that it should have changed every classroom on Earth.

The experiment was simple. She recruited 36 university students and put each one in a cap with 256 sensors pressed against their scalp to record brain activity. Words flashed on a screen one at a time.

Sometimes the students wrote the word by hand on a touchscreen using a digital pen, and sometimes they typed the same word on a keyboard. Every neural response was recorded for the full five seconds the word stayed on screen.

Then her team looked at the part of the data most researchers had ignored for years, which is how different parts of the brain were communicating with each other during the task.

When the students wrote by hand, the brain lit up everywhere at once.

The regions responsible for memory, sensory integration, and the encoding of new information were all firing together in a coordinated pattern that spread across the entire cortex. The whole network was awake and connected.

When the same students typed the same word, that pattern collapsed almost completely.

Most of the brain went quiet, and the connections between regions that had been alive seconds earlier were nowhere to be found on the EEG.

Same word, same brain, same person, and two completely different neurological events.

The reason turned out to be something nobody had really paid attention to before her work. Writing by hand is not one motion but a sequence of thousands of tiny micro-movements coordinated with your eyes in real time, where each letter is a different shape that requires the brain to solve a slightly different spatial problem.

Your fingers, wrist, vision, and the parts of your brain that track position in space are all working together to produce one letter, then the next, then the next.

Typing throws all of that away. Every key on a keyboard requires the exact same finger motion regardless of which letter you are pressing, which means the brain has almost nothing to integrate and almost no problem to solve.

Van der Meer said it plainly in her interviews.

Pressing the same key with the same finger over and over does not stimulate the brain in any meaningful way, and she pointed out something that should scare every parent who handed their kid an iPad.

Children who learn to read and write on tablets often cannot tell letters like b and d apart, because they have never physically felt with their bodies what it takes to actually produce those letters on a page.

A decade before her, two researchers at Princeton ran the same fight using a completely different method and ended up at the same answer. Pam Mueller and Daniel Oppenheimer tested 327 students across three experiments, where half took notes on laptops with the internet disabled and half took notes by hand, before testing everyone on what they actually understood from the lectures they had watched.

The handwriting group won by a wide margin on every question that required real understanding rather than surface recall.

The reason was hiding in the transcripts of what the two groups had actually written down.

The laptop students typed almost word for word, capturing more total content but processing almost none of it as they went, while the handwriting students physically could not write fast enough to transcribe a lecture in real time, which forced them to listen carefully, decide what actually mattered, and put it in their own words on the page.

That single act of choosing what to keep was the learning itself, and the keyboard had quietly skipped the choosing and skipped the learning along with it.

Two studies. Two countries. Same answer.

Handwriting makes the brain work. Typing lets it coast.

Every note you have ever typed instead of written went into your brain through a thinner pipe. Every meeting, every book highlight, every idea you captured on your phone instead of on paper was processed at half depth.

You did not forget those things because your memory is bad. You forgot them because typing never woke the part of the brain that would have made them stick.

The fix is the thing your grandmother already knew.

Pick up a pen. Write the thing down. The slower road is the faster one.

[Perttu Kaijansinkko @perttuk]

Tämä juttu tavallaan kiteyttää nykykulttuurin vinksahtaneen suhtautumisen seksuaalisuuteen.
https://t.co/9EEeICENQd

[More Births @MoreBirths]

Sterile Polygamy: The mating system we accidentally built
A brilliant new essay by @joshuafkon in Aporia Magazine explains how modern dating and mating broke fertility.

"Marriage and all that it entails — shared finances, legal ties, social expectations — makes the enormous investment of raising children viable. Serial dating has no lock-in. Either party can exit at any time. Without that commitment structure, neither side has an incentive to make the sacrifices that children require."

Marriage age has increased dramatically in the last 50 years in United States, Japan, South Korea and Germany while the share that ever marry is lower in every country.
A decomposition of fertility decline since 1970 shows that most of it is explained by people delaying marriage or never marrying at all.
With just the marriage norms we had in 1970, fertility would be well above replacement in the US and probably most of Europe and Asia as well.

[Merriam-Webster @MerriamWebster]

‘Goodbye’ is an alteration of “God be with you.”

[Sebastian Tynkkynen MEP 🇫🇮 @SebastianTyne]

Perussuomalaiset – ja vain ja ainoastaan @persut – varoitti alusta alkaen, että elpymispaketti olisi EU:lle vain keino kahmia lisää valtaa itselleen.

Ja kuinka kävikään?

Kirjaimellisesti mitään kasvua ei saatu aikaan, mutta sen sijaan paketilla kyllä lukittiin jäsenvaltiot 30 vuoden velkavankeuteen, jonka varjolla Bryssel haluaa nyt itselleen oikeuden verottaa "suuryrityksiä".

Onnea, suomalainen yrittäjä, tästä lystistä saat kiittää kaikkia muita puolueita sekä heidän säälittävän löysää EU-linjaansa.

Kilpailukykymme rypee jo nyt pohjamudissa, ja tämä ehdotus on omiaan avittamaan sen lopullista kuolemaa.

"Suuryrityksen" kriteeriksi riittäisi komission esityksessä vain ja ainoastaan 50 miljoonan euron liikevaihto, mikä on suorastaan naurettavaa.

Suomessakin on lukuisia yrityksiä, joiden vastaavasta liikevaihdosta jää viivan alle vain murto-osia.

Ja nyt EU haluaa tulla viemään tuhkatkin pesästä.

Tähän hulluuteen tarvitaan nyt muilta puolueilta vastaus:

Ovatko he valmiita myöntämään olleensa totaalisen väärässä neljä vuotta sitten, ja ottamaan vastuun tästä suomalaisia yrittäjiä yhä syvempään ahdinkoon ajavasta politiikasta?

[More Births @MoreBirths]

An important essay by @MarcNovicoff in The Atlantic. The birth rate crisis is much worse than we think, because the UN numbers have been, and continue to be, far too rosy.

Gift article linked below:

[Perttu Kaijansinkko @perttuk]

Kun kirjoittaja tietää, että kolumni ei niitä suurta suosiota, on luvassa asiaa.

[Lääkärilehti @Laakarilehti]

Elämämme murmelina

#ilmastonmuutos #vauva

https://t.co/00rk1Eaz8C

[Jyrki Vainio @JyrkiVainio]

Havainnollistavaa infografiikkaa Amerikan kiitospäivän synnystä: yllä Mayflowerista Uuteen maailmaan maihin nousseet, alla ne, ketkä olivat enää vuotta myöhemmin elossa.

[More Births @MoreBirths]

A great thread on the Laestadian Lutherans of Finland.
They embrace large family norms but are also very mainstream. Many are important leaders in Finnish society.
Finnish fertility is 1.25 births per woman, but the fertility of Laestadians is four to five times higher.

[Perttu Kaijansinkko @perttuk]

Olin tänään vuotta vanha kun tajusin, että numeeriselle arviolle kivun voimakkuudesta 0–10 on oma lyhenne NRS, ei VAS. #tänäänvuottavanha #yleislääkäri

[Perttu Kaijansinkko @perttuk]

https://t.co/CZmkZZetiD

[Roger Kulmala 🇫🇮🦁 @RogerKulmala]

Julkisen sanan neuvosto on vetelä keskustelukerho: Kokoustaa harvoin, käsittelyyn seuloutuu vain kapea siivu kansalaisten kanteluista

https://t.co/VpmhJN1snd