Peter Daniel Keiru

Rocket ship builder, nyama choma expert, loves the Giants, Parent.
Avaition and Energy.

[Arnaud Bertrand @RnaudBertrand]

As someone who partially grew up among European elite kids like him, this reminds me just how incredibly hollow some of them are.

For a quick background, I went to one of the poshest high schools in France (Janson de Sailly, for those who know) and, afterwards, to what was at the time - and probably still is - the most expensive undergraduate school in Europe (EHL in Lausanne, Switzerland).

Needless to say, many of my classmates were from unbelievably privileged backgrounds. Just in my classroom in Lausanne I had the son of a (very famous) Russian oligarch, the son of Italy's largest real estate developer and the son of Spain's largest real estate developer (funnily, the latter two were flat mates).

Another classmate of mine came from the richest family in Naples, Italy and - while we were at school - his father (known in Naples under the nickname "Il Sultano") got arrested for having bribed half of Naples's city council - which, if you know Naples, ought to tell you something.

These were the kids I was doing group projects on business ethics with (literally) 😅

Anyhow, my story, and probably my luck, was that - before going to high school in Paris - I was raised in very normal public schools in the South of France where my friends were anything but wealthy. Their parents were farmers and everyday workers.

Which means - and I'd come to realize this was very important in life - that it was easy for me to understand how big a mistake it is to see money as identity and meaning - and to confuse someone's net worth with their actual worth.

What really struck me at the time was the contrast with my "poor" classmates of earlier in my life. They couldn't define themselves by what they had - by definition - and this forced them to reach deeper for their identity: their skills, knowledge, humor, etc.

Rich kids can skip that entire process, and the tragedy is that most of them do: they reach for the readymade identity that money provides. I remember being incredibly frustrated by many of my classmates, like "ok, I get it, your dad is rich and you own a lot of nice things but who are YOU, what else is there?" The answer, more often than not, was nothing.

To be fair, there were exceptions. One of my classmates I was most impressed by came from one of Zurich's wealthiest families (which, if you know Zurich, means insanely wealthy) yet he was almost OCD in not showing he had money: driving the shittiest car imaginable, living in a small studio, etc. He was very intellectual, very contrarian, and clearly at war with the idea that his family's wealth ought to define who he was.

I only discovered who he actually was when I started my first company and he approached me to invest: to discuss the investment I went to one of his family homes, which it turned out was a literal palatial castle on the shores of Geneva lake. The guy had decided to live in a small rundown studio when he literally had a castle sitting empty a 5-min drive away.

THAT I was impressed by: it's easy to see that money isn't meaning when you don't have any. To see it when you have more than almost anyone - when everyone around you is organized around the opposite assumption - is much harder. But to actually live it, to choose the studio when you have the castle keys in your pockets - with no audience to applaud you for that - that shows real depth.

At the end of the day, I think, the real distinction isn't between rich and poor but between people who exist from the inside out and people who exist from the outside in.

Wealth just happens to make it incredibly easy to be the latter, to skip the work of becoming someone and settle for a borrowed identity that glitters from the outside but is hollow all the way through. A Potemkin village identity.

This is actually a real societal issue, and magnified by social media (with idiotic posts like this one 👇): the more "outside in" folks out there, the less people with genuine internal anchors, the more fragile everything becomes.

When you think about it, everything that genuinely matters in a society is built by people who think for themselves: they take the world in, pass it through something genuinely their own, and give back something that didn't exist before: an idea, a conviction, a stand.

Every reform, every invention, every act of moral courage in history came from someone with an internal anchor strong enough to resist the current. Remove those people and all you have left is the current.

This isn't new, by the way. Most ancient traditions warn against exactly this, from the Bible (the golden calf story) to Confucius, who built his entire ethics around the distinction between the exemplary person (the Junzi, 君子) - oriented around internal cultivation and righteousness - and the petty person (Xiaoren, 小人), oriented around profit and gain. The junzi builds himself from the inside, the xiaoren chases what's outside.

So please, do not make the mistake of being impressed by wealthy people flaunting their wealth. Don't focus on the glitter, focus on the hollowness it's trying to hide.

[Peter Daniel Keiru @KeiruPeter]

@Alfayaz11 @MuriraKinoti @KURAroads Kwanza the pic with the securex van, that section was just left like that!! It's been in that state for ages and ages

[Peter Daniel Keiru @KeiruPeter]

@Alfayaz11 The new cash cow is the speed cameras enforcement of laws that the rich will feel the pinch of breaking 50 / 80 / 110 etc. Mtu wa boda can do whatever he wants till he gets a car!! Packaged Rubbish ���� @Gicicio

[Peter Daniel Keiru @KeiruPeter]

@generali_osumo 💉 to the marrow

[Peter Daniel Keiru @KeiruPeter]

@BeaumontWest @MainaKaibere But the wrong side bodas and the nganya that's just killed people on enterprise rd got through🚮 packaged rubbish @Gicicio

[Peter Daniel Keiru @KeiruPeter]

@DreamgirlLynn @StratCorpGlobal 🚮

[Johnny B. Good @Cat5SMASHICANE]

I'm sure that it's not cheap to rent this man and his machine out for the day but let me tell you, it's worth every penny. This thing is incredible! To not have to send a man all the way up there with the saw and to get it done so quickly is priceless. If I hit the Powerball I'm buying one of these and going into business. 💯💰💵

[Luke O'Halloran @Antifaucist722]

Wow! That is amazing. I wonder how many calves died over those millions of years because the milk didn’t have enough fat and just dispersed into the ocean…? Wait a second, if it took millions of years to develop this system of survival-how did they survive for millions of years?… could it be that they were designed this way? Seems a whole lot more logical. Kind of fits in along the lines of irreducible complexity… it’s laughable to think that whales originally had 4% milk fat and because of that their calves were dying. So in response, nature came up with a solution that took millions of years to develop. And somehow they all kept breeding and surviving, despite the fact that the milk was only 4% fat and then 5% and then 6%-for millions of years 😂😂 it takes a lot less faith to just look at that and say, “hmm, there must be a designer.”

[Paul Muite SC @Paul_Muite]

People MUST resist Freehold Land being turned into Leasehold and oppressive TAXES imposed with the Land being auctioned upon failure to pay the those taxes.Objective is to disposess people of their Lands and turn them into labourers for the new owners.We have a CRIMINAL regime

[Sama Hoole @SamaHoole]

Activist: "Wool is cruel. The sheep should be left alone."

Farmer: "Alone where?"

Activist: "In a sanctuary."

Farmer: "Doing what."

Activist: "Just being a sheep."

Farmer: "Sheep have been bred for ten thousand years to grow a fleece that doesn't stop. If I don't shear her, she overheats, gets fly strike, and dies in her own coat with maggots eating her from the skin down."

Activist: "Then breed sheep that don't grow wool."

Farmer: "We did. They're called mouflon. They live on cliffs in Sardinia and would last forty minutes on a Welsh hillside before something ate them."

Activist: "I just don't think we should use animals for clothing."

Farmer: "What's your jumper made of."

Activist: "...recycled polyester."

Farmer: "Plastic, then. Sheds microfibre into the washing machine every wash. The fibres go through the filter, into the river, into the fish, into you. When you're done with it, it sits in a landfill for four hundred years. My sheep's fleece composts in a hedge in eighteen months and grew back on her this spring."

Activist: "But the sheep didn't consent."

Farmer: "She was lying down with her eyes closed when I finished. She got up and went back to eating. I'd suggest you ask her how she feels, but she's busy, and I think she's already given her answer."

[Ihtesham Ali @ihtesham2005]

To get a license to drive a black cab in London, you have to memorize 25,000 streets, 20,000 landmarks, and the fastest route between any two points in a six-mile radius of Charing Cross. It takes most people three to four years.

A British neuroscientist asked the obvious question nobody had thought to ask. What does that actually do to a human brain?

Her name was Eleanor Maguire. The study changed neuroscience forever.

The exam is called The Knowledge. It was introduced in 1865, and the format has barely changed since.

Applicants ride a moped around London for years with a clipboard strapped to the handlebars, tracing every possible route between every possible pair of points in the city.

They get tested in person by an examiner who can ask them, on the spot, for the shortest legal route between any two addresses in a database of tens of thousands. Half the people who attempt it fail.

The ones who pass have spent an average of four years studying full time and have taken the test 12 times before getting through.

Maguire was watching a TV movie about it in 1995 when she had the idea. These were not ordinary people. They were people running one of the most extreme spatial memory training programs that exists anywhere on Earth.

If the human brain could be reshaped by experience, this was the cleanest natural experiment anyone was ever going to find.

She put 16 of them in an MRI machine.

Their posterior hippocampi were significantly larger than the brains of matched controls. The longer a driver had been working, the bigger the difference got.

A 40-year veteran had a measurably more developed hippocampus than a 5-year veteran, and both had more than someone who had never driven a cab.

Here is why that finding broke a century of consensus.

Until 2000, every neuroscience textbook in the world taught a version of the same idea. The adult brain is essentially fixed. You are born with a set number of neurons. Childhood is the window where the wiring gets laid down. After puberty, the structure freezes, and the rest of your life is just slow decline.

Maguire's study was one of the first pieces of human evidence that this was simply wrong. Adult brains physically remodel themselves in response to what you ask them to do. Not metaphorically. Structurally. With grey matter you can measure on a scan.

The skeptics had an obvious objection. Maybe people with bigger hippocampi were just more likely to become taxi drivers in the first place. The brains were not changing. The job was selecting for brains that already looked that way.

So Maguire ran the experiment again. Properly this time.

She recruited 79 trainees who were just starting to study for The Knowledge and 31 controls who were not. She scanned all of them at the start. Then she waited four years. Of the 79 trainees, 39 eventually passed the exam and 20 failed. She scanned them again.

The trainees who passed had grown larger posterior hippocampi over those four years. The trainees who failed had not. The controls who never studied had not. The brain change was not selection. It was construction.

The act of memorizing the city had physically rebuilt the part of the brain responsible for spatial memory, and the rebuild only happened in the people who actually did the work.

There is a quieter finding from this research that almost nobody quotes, and it is the one I cannot stop thinking about.

The drivers had a bigger posterior hippocampus, but they had a smaller anterior hippocampus. The brain had not magically expanded. It had reallocated. Tissue that was being used for one type of memory had been compressed to make room for another.

When Maguire ran follow-up cognitive tests, the cabbies were measurably worse than controls at certain visual memory tasks unrelated to navigation. They had paid for The Knowledge with something else. The trade was real.

She also ran a second control experiment that is the part of the story most people never hear. She scanned London bus drivers. Same hours behind the wheel. Same city. Same traffic. Same stress. The only difference was that bus drivers follow fixed routes. They do not have to navigate. Their hippocampi looked completely normal.

The cab drivers had not grown bigger hippocampi from driving. They had grown them from the constant, active, effortful retrieval of spatial information from memory.

That distinction is the entire study.

Then in 2020, McGill researchers ran the inverse experiment. They tracked 50 regular drivers and measured how often they used GPS. The participants who relied most heavily on turn-by-turn navigation had measurably weaker spatial memory. When the researchers retested a subset of them three years later, the heavier GPS users had declined fastest.

The hippocampus, the same region the cabbies had built up by ignoring shortcuts, was being slowly hollowed out in everyone else by accepting them.

The mechanism Maguire spent 25 years documenting works in both directions. Brains grow what you make them grow. They lose what you stop asking them to do.

The taxi drivers were running the most intense spatial memory training program on Earth. Most of the rest of us are running the opposite program without realizing it.

Maguire died in early 2025. UCL's tribute described the cabbie study as a stroke of creative genius. She had spent her entire career on a single question. What does it physically take to remember something, and what changes inside a person who remembers a lot of it.

The answer is the part that should change how you live.

[Peter Daniel Keiru @KeiruPeter]

@AmbokoJH @africaupdates Now we are talking these are the things serious countries do to pull out of poverty and boda boda shenanigans @Gicicio

[Chris Sambu @the_sambu]

BBC Africa in an interview with Kenya's foreign affairs CS Musalia Mudavadi;

BBC: Is France rebranding itself in Africa through Kenya?

Mudavadi: That is for France to answer.

BBC: But we don't have France; we have you here.

Mudavadi: Yes, you have me here.
.......🙄

[Peter Daniel Keiru @KeiruPeter]

@SteveNomadic Lots of disturbed People on the planet 😏

[Peter Daniel Keiru @KeiruPeter]

@IanECox Rule of law is only a suggestion and not taken seriously. It's so clear with the boda boda sector and the consistent overlapping and other shenanigans that are common place on Kenyan roads. 🚮

[₩₳Ɽ ₱₳₮Ⱨ @WarPath2pt0]

Counterpoint--

[Anish Moonka @anishmoonka]

Winston Churchill fought his depression with bricks. He'd lay them for hours at his country home in Kent. He joined the bricklayers' union. And in 1921 he wrote about why it worked. It took psychology another 75 years to catch up.

He called his depression the "Black Dog." It followed him for decades. His method for fighting it back was as basic as it sounds: laying brick after brick, hour after hour.

Churchill spelled out his theory in a long essay for The Strand Magazine. People who think for a living, he wrote, can't fix a tired brain just by resting it. They have to use a different part of themselves. The part that moves the eyes and the hands. Woodworking, chemistry, bookbinding, bricklaying, painting. Anything that drags the body into a problem the mind can't solve by itself.

Modern psychology now calls this behavioral activation. It's one of the most-studied depression treatments out there. Depression sets a behavior trap. You feel bad, so you stop doing things, and doing less means less to feel good about. Feeling worse makes you do even less. The loop tightens until you can't breathe inside it.

Behavioral activation breaks the loop from the action side. You schedule the activity first, even when every part of you doesn't want to. Doing it produces small rewards: a wall gets straighter, a painting fills in, a messy room gets clean. Those small rewards slowly rewire the brain. Action comes first, and the feeling follows.

Researchers at the University of Washington put this to the test in 2006. They studied 241 adults with major depression and compared three treatments: behavioral activation, regular talk therapy, and antidepressants. For the people who were most severely depressed, behavioral activation matched the drugs. It beat the talk therapy. A 2014 review of more than 1,500 patients across 26 trials backed up the result.

Physical work like bricklaying does something extra on top of this. It crowds out rumination, the looping bad thoughts that grind people down during the worst stretches of depression. Bricklaying needs both hands and gives feedback brick by brick: each one is straight or crooked. After an hour you can see exactly how much wall you built. No room left for the mental chewing.

The line George Mack used in his post, "depression hates a moving target," is good poetry. The science behind it is sharper. Depression hates a brain that has somewhere else to be.

[MAX🗽⚡️ @maxelectrified]

Hey @MercedesBenz !

just make this happen and we are all happy!

[Princess A @cessadelove1]

I'm currently studying the book of Mark and noticing that even though the Pharisees didn’t like Jesus, they always followed Him around, paying attention to everything He was doing or saying and ready to criticize Him.
Nobody watches and criticizes you like people who don’t like you.

[Lila Rose @LilaGraceRose]

Prestigious doctor leaves a crowded room stunned after asking pro-abortion politicians:

"If abortion is healthcare, my question is: what disease are you treating?"