Miscellaneous September 2025
Miscellaneous September 2025
“It seems a common experience in the lives of people with high agency is that they, at some point, metaphorically, lean against a wall and discover that there is a hidden door. they get into the habit of testing if walls are actually doors, and the more they do so, the more examples of hidden doors they find, and the more inclined they are to look for them.” (Henrik Karlsson)
A few tech highlights from September 2025 on AI, self-driving cars, and next generation interfaces
AI happenings
This month I noticed a number of posts/newsletters/articles on China, in particular on how China was innovating technically to an extent not fully appreciated (or always matched) in the US. Below are a few snapshots from what I came across this month.
Jiro Ono: The documentary “Jiro Dreams of Sushi” brought attention to one of the greatest sushi chefs in the world, and the dedication and consistency behind that greatness. In a recent podcast, David Senra covered Jiro, with more details from additional research. Below are a few notes from the podcast that stood out to me.
Level of commitment
Steve Jobs said when making the Mac: “The [existing computer line at Apple] wanted to build something great; the Mac team wanted to build something insanely great. The difference showed”. Jiro wanted to make insanely great sushi:
Miscellaneous
James Dyson made 5,127 prototypes of his vacuum over a 14 year span until he felt it was ready. David Senra’s podcast on Dyson raised the bar for me on what persistence looks like:
4,000 Weeks - Time Management for Mere Mortals by Oliver Burkeman
'4,000 Weeks' covers how to think about and use our incredibly limited time - including accepting we can't do everything, choosing where to strategically underachieve to focus on what's most important to us, and enjoying the time we do have.
I was recommended this book a few times, and decided to read it when an author I like said reading it changed his life. The book has certainly impacted how I think about time - here are my top 10 excerpts (lightly edited) from '4,000 Weeks'.
1) You get 4,000 weeks if you're lucky
The average human lifespan is absurdly, terrifyingly, short. You get about 150 weeks in high school, 150 weeks in college, 500 Saturdays a decade. See Paul Graham's related essay screenshot below providing a quantitative sense of how life is not only short, but the finite time periods within it are even shorter. Once you accept that you can focus on what’s possible instead of trying to do everything.
2) Civilization is relatively recent
60 100-year-olds back to back is all of civilization. That's fewer people than you've probably seen at a single birthday party. For perspective, you are:
("We have a bias to judge history from the short perch we occupy. Our few thousand weeks feel like the hinge of the universe - they aren't")
3) Accept you can't do everything
You will always have more to do then time to do it. And the faster you move the more things are given to you to move fast on ('the faster you answer email the more email you will get').
The day will never arrive when you have everything under control, when no one is angry with you for missing a deadline or dropping the ball. Controlling your life fully and meeting everyone’s demands and your own goals is not possible.
4) Tough choices are needed
Since we don’t have time for everything, we have to make tough choices between things. Every real-world way to live entails the loss of countless other ways of living. Practice strategic underachievement - decide in advance what to fail, what you’ll let slide to protect what matters. Identify the areas of your life that you won’t expect to excel in for some period of time - you can rebalance later (to a degree) to take a stand on what matters most to you.
5) Claim time
“After years of trying and failing to make time for her illustration work, by taming her to-do list and shuffling her schedule, Abel saw that her only viable option was to claim time instead—to just start drawing, for an hour or two, every day, and to accept the consequences, even if those included neglecting other activities she sincerely valued.” (see video metaphor - prioritize your foundational 'rocks' first)
6) Use the little moments of spare time
“The art of living is to make use of the spare time, the odd moments, that most men throw away.” (30 mins daily = 182 hours a year; the spare moments meaningfully add up)
7) De-instrumentalize time
Before the Industrial Revolution, time used to be the medium in which life unfolded, the stuff life was made of. After, once time and life had been separated it became a resource or input to be used.
Don’t be someone who is always living in the future, never enjoying the present but just looking at time as an instrument to help you get to the next point. Treat moments as ends in themselves, not just means. Rest and leisure have intrinsic value (sabbath, walks, looking around). You don’t have to be doing something for some other reason. Resting doesn’t have to be used for something else. In fact it’s the way to fully inhabit the world.
8) Time isn't something we can ever really possess or fully control
You can have an expectation for how the evening or week or month or next chapter of your life will go, but you will almost always end up surprised.
Demand for reassurance from the future will never happen. The struggle for certainty is an intrinsically infeasible thing to get. Time just isn’t the sort of thing you get to order around like that.
9) There will be final occasions for everything
There will be a last time when you visit your childhood home, see an old friend, swim in the ocean, hug your partner, drop off your kid at school, etc. You never know in most cases when the last time will be.
Indeed there’s a sense in which every moment of life is a last time - it arrives, you’ll never get it again, and once it’s passed your remaining number of moments will be one smaller than before.
10) Your attention defines your life
What you pay attention to defines for you what reality is. It’s not just a resource. It is your life. Life is a succession of transient experiences valuable in themselves which you’ll miss if you’re completely focused on the destination to which they’ll be leading.
Earlier this month, I had the opportunity to go see the Backstreet Boys' Into the Millennium concert at The Sphere. I had never seen BSB in concert (in the boy band wars of that time, I chose NSYNC), but I have to say they were incredible and performed as if they were in their prime. The millennial teenybopper in me had the best time singing along to every word of every song, and the visual effects at The Sphere were unlike anything I had seen before. I highly recommend going to see a concert or production there - they are currently doing The Wizard of Oz, and the TikTok's I've seen look amazing. Sharing a few photos/videos here. Enjoy!
Looks amazing!! I will need to see it in person!
Violin Covers
People often ask me “Henri, you play the violin, what are your favorite violin covers of pop songs?” (no one has ever said this to me ever…).
Here are 3 of my favorites - some familiar yet different takes on some of your favorite songs!
Different things keep people up at night: laundry lists of endless to-dos, the state of the country, where IS Waldo?
What keeps me up, you ask?
I’m still bitter about The Society being canceled.
For those who missed it, the show dropped on Netflix in 2019 and quickly gained a cult following. The premise was bizarrely intriguing: a group of Connecticut teens return from a canceled field trip to find their town completely empty. No parents, no siblings, no teachers—no one but them. Soon, they realize they’re not just cut off from the outside world… they might be trapped in an alternate version of their hometown.
What made it stand out wasn’t only the mystery, but how it tackled themes of power, justice, and morality—while still leaning into the absurdity of it all. Watching these teenagers attempt to build a government, ration food, and grapple with loyalty and betrayal felt like Lord of the Flies meets Dawson’s Creek. The mix of survival drama, political tension, and messy teenage relationships almost distracted you from the fact that the whole thing kicked off with the kids complaining about a horrible smell in town. Like I said: BIZARRE.
The first season ended with a shocking reveal (no spoilers—you should still go watch it). It left fans desperate for answers. How did they get there? Was it supernatural, scientific, or something else entirely? Would New Ham’s fragile government implode? Who could be trusted? And seriously, what on earth was that smell?
Season 2 was greenlit, and we were promised answers about the origins of their situation and the fate of both worlds. But then COVID hit, production delays piled up, and Netflix abruptly canceled it in 2020. Which means we’ll never know what the writers had planned, how the mystery unraveled, or which characters would have survived the long game.
And that’s what makes it so frustrating. So many threads dangling, so much potential left unexplored. The Society wasn’t perfect, but it was ambitious, smart, and brimming with possibility. To this day, I hate that we’re stuck with an unfinished story—endlessly wondering what might have been.
We gotta find out what that smell was!