Headworx

I've had a chance to test Starlink (the "mini" variant) over the last week during the trip to Cabo Verde - a remote archipelago in the middle of the Atlantic Ocean. This was originally planned as a remote work week (no, AI does not make us less busy). And for that, Internet connectivity is fundamental. Before the trip we checked various internet forums for the quality of WiFi (and cellular) services there, and the opinions were very mixed. The first location we stayed at (close to Porto Novo) actually had upgraded to their own Starlink, and in our hut there was even the Starlink Mini Router Node installed. In the other location (the Paul valley) there was LTE coverage (not very fast), and the house had WiFi at around 4Mb down / 0.5Mb up - fine for basic browsing but not for video conferencing. I ordered the Starlink Mini dish via the Starlink.com site before the trip. It comes with a 30-day return policy. Probably I will keep it though, as generally it worked and it may j...

We have clearly got carried away with AI. I'm hearing singularity, AGI, fully automated economy... Yet the truth is the basic IT services and apps just suck. They are often pretty and that seems to be sufficient for most complacent users, yet the quality of their output is really, really bad. A year ago I was complaining about the Flighty app . Pretty but totally inaccurate. Google Calendar is not that much better - it fails on some most critical tasks. Like managing date / time on trans - Pacific flights. These flights are tricky because they cross the date line: going west you lose a day, going east you gain a day. My typical east-bound itineraries are via Los Angeles or San Francisco, where I have other connecting flights. These flights are always part of the same booking and they usually include a 1-3 hours layover. Looking at the departing times of the connecting flights, they often depart on the same day as the long haul Asia -> America flight, but nominally at an earlier ...

I lost my passport when changing planes in San Francisco. Arrived from Seoul, Korea, on the way to Denver, Colorado. Deplaning was fast and immigration even faster. The bag was already on the carousel. I headed to the United bag re-check area, then visited a bathroom and cleared the US security screening with ample time to reach my connecting flight.  Re-checking my belongings after the security I realized the passport was missing. And immediately I remembered I had it in my hand when exiting the customs and put it on a shelf in the bathroom at the bag re-check area. I would have realized earlier as security checkpoint requires passports, but I had Clear+ , so breezed through the checks without any documents. I made an attempt to get back to where I left it, but it just did not work. San Francisco airport undergoes heavy modernization and terminal patterns are not what they used to be. Suffice to say the United flight from Seoul arrived at gates B, which is T2 (the Delta terminal)....

Last week, with 184 visa-free countries, Polish passport has moved up to #5 rank globally. Interestingly there are 3 other post-communist European eastern block countries at #5. Actually positions 3-8 are all occupied by European countries. #1 is Singapore an #2 Japan and Korea. This is just one illustration of the transformation the former Soviet-block countries have gone through. But also Europe as such, despite much criticism about bureaucracy, poor state-driven economy, lack of entrepreneurial spirit and general over-regulation, to quote Fareed Zakaria, Europe has done something very extraordinary, even as it has declined in terms of raw power. Europe has shown that past a certain level of economic wealth, what matters is not just sheer economic wealth. What matters is quality of life, what matters is certain level of equality, and things like that Europeans have. For most of history, general quality of life was closely correlated with wealth. The richer you were, the better. A...

Sustainability discussions have become mainstream now. And the theme is very broad, touching essentially every aspect of our lives. Cars have however always occupied the center stage, especially now as electric vehicles (EVs) take over traditional internal combustion engine (ICE) based - mostly in China and Europe. Feeling a bit guilty here - as an owner of a 20+ years old Subaru Forester, I did some math (seeking some absolution). I don't drive much with this car though, maybe a bit over 5000km per year, so the initial feeling was that my contribution to the global carbon footprint would not be super high. For comparison I took the additional footprint of flying intercontinental in business class vs economy (more floor space, heavier seat etc., and all those bottles of champagne on board) and the global reduction impact of the lighting control software my company makes. So here is my math: The car: 5000km is about 600 liters of fuel. Burning 1 liter produces roughly 2.3kg of CO2. ...

I'm in the middle of a yet another round-the-world trip. Started two weeks ago in Europe for the Milan Bluetooth Member Summit , followed by the ultra dense in meeting Guangzhou International Lighting Exhibition in China. Next week I'll have a number of customer meetings in the USA. Luckily there is a short weekend pause in between, which I decided to spend in the "TikTok city" of Chongqing. It is a 6-hour high speed rail ride from the coast (the CR400 "Fuxing" at 350 km/h ), which I spent almost entirely glued to the window, with my brain working in the background to aggregate and generalize the inrush of information of the past 14 days. One of the puzzles I was trying to solve was the explosive SpaceX IPO, which, on the surface, has never made any sense to me. Everything I know about SpaceX, plus what I read in the S-1 filling, is a pure fiction (with the exception to the Falcon rockets that represent the solid part of the business). That is on the surface...

Bikerafting in the Abel Tasman National Park is now on my bucket list. Still very uncertain at this point as I first need to find a company - this activity is not easy alone. But first things first, I've placed it on the bucket list. And started sone preparations. If not Abel Tasman, there are many options elsewhere.  I had a mountain bike some 25 years ago but never went on a multi-day offroad trip. That bike is now barely functional and bikes in general have changed a lot. They are now much more capable to ride (hydraulic disc brakes do make a difference) and comfortable (the modern shifters reduced the complexity - just the rear shifter does it all with 11-12 gear cassettes).  I started building the bike with the help of AI (Gemini) as initially I even did not know what to ask for. It guided me with selection of frame and drive options as well as recommended a great local shop that beautifully put it all together ( Peak Bike in Krakow - highly recommended). And then I've ...

The Wallet app is one of the reasons I use my phone more often. For touch payments: when done by phone they don't require a PIN code: faster and more secure. For other card types: mostly as an organizer to have them all in one place. And then for airline boarding passes: not only for convenience, but more importantly as a backup. Airlines love their branded apps. Some of them are barely usable, just being mostly web views on responsive web pages with (almost) no offline functionality. Some are really good - like the often mentioned United Airlines app. But it turns out even the best ones can fail unexpectedly. Just last week my United app lost all my flights . Fortunately this was just the app. It was a bit scary moment, but of course GMail is the mother of all backups. So I retrieved the booking confirmation code of my upcoming trip, then manually added the flight to the app and was able to check-in. The check-in went fine and I added the boarding passes to the Apple Wallet. That ...

Let's take a break from the heavy DALI issues series for a while. I did a lot of travel in the past 2 weeks (and a half). First it was LEDucation - the best lighting trade show in New York, followed by factory visits in China and the Bluetooth Asia event in Shenzhen. Was about to return home but then chasing an important business development I ended up detouring home through Australia. As always tons of lessons and experiences. I love being close to customers, as this really helps get down to Earth and understand their contexts, motivations, and - most importantly - what we should be doing to address them well. Also being a global traveler  has increasingly made me sometimes too confident. Take China - once you travel there once or twice, it becomes really easy to navigate there. And as everything is so overwatched (cameras everywhere!) and therefore safe, your vigilance drops. And this was the case when I ended up in Shenzhen / Shekou ferry terminal. This ferry is BTW super conve...

So much for iPhone privacy. I had thought that paying in a physical store with contactless Apple Pay was more or less protecting my privacy. It turns out this is not the case. I mean of course paying by credit card you give your static credit card number to the merchant. But that should be it, right? Just the number. Not your email, home address, phone number and God knows what else. So I was quite stunned in Queenstown, New Zealand, after landing I went to a sports shop to buy some freeze dried food and a gas canister. When paying I rarely pay attention to the details other than the transaction amount but I thought there was a glimpse of my phone number and my email on the terminal for a short while. This was confirmed later this day when I received a bunch of emails from the store - welcome, coupons etc. Had I provided them with this data voluntarily? Nope. I even went through my email history and there was no trace of any earlier communication from that store chain. So they must hav...

Phones are now absolutely essential items in our (connected) lives. It becomes impossible to read an email (2-factor authentication), authorize a financial transaction (often as simple as a credit card purchase) or board a plane. The trend keeps going further, as we have been now transferring identity documents to phones' "wallets" (including many official government-made applications). Then there are social aspects like electronic messaging, photo sharing. And navigation (car or trail / backcountry). At the same time it has become increasingly more difficult to make a simple backup device, as many of the above mentioned services are tied to digital security / identity chips that by design are impossible to backup and require full reinstallation of the digital services. I covered this in my recent phone migration blogs here and here ). Long story short - changing a phone (voluntarily as an upgrade or being forced to as a result of a device loss or damage) requires plenty...

There are several things that give me goosebumps. Or make me think how little we comprehend / understand about the weird world we live in. Physics - the way we have it now - is completely bent. Totally far from being intuitive and understandable. Take the John Wheeler's double-slit experiment . A source of light and a screen with two thin, vertical slits. You shine the light through the slits, the light acts like a wave., interferes with itself, resulting in a ripple-like pattern on the wall. Turn the light down to only a single photon. The photon acts like a particle: hits the wall in one specific spot. But after enough photons arrive, the same interference pattern emerges. The single photon interferes with itself. Now add a detector to the slits, to figure out which slit the photon actually passed through. When you do this, you never get an interference pattern on the far wall. The OBSERVATION (not any interaction with) of the photons affected their behavior. Then there...

I'm writing this post in December, 2025, in preparation for couple of weeks' holidays In January / February. I understand packrafting now may sound a bit extreme, but hey, it is peak summer now in New Zealand. And NZ is where it all started - I found this article (see the snapshot) in an old magazine that was left in one of the New Zealand's mountain huts. That was in 2024 - almost two years ago. Since then we have completed a white water packrafting camp to get familiar with packrafts and river rafting / kayaking in general. That was in Slovenia, and is a great idea for an active summer adventure in Europe. Then we found a great supplier of packrafting gear in Poland - I mentioned packraft.pl in my Spring'2025 post on the subject. Now we are back to where it all began. Not as ambitious as Mitchell Radford, but his documentary is definitely a good one to understand what this activity is all about.  We're also trying to pack much lighter than he did. 39 kg / 85 lbs...

2025 was very travel - intensive for me. Needless to say I managed to ern the 1K status flying only in (often deeply discounted) economy class.  This can be nicely seen in the Flighty app . The app that I called useless (because all it offers is already possible in the native airline apps). But on the other hand Flighty is really pretty and the visualization of flights overlayed on top of Apple Maps is cool :) Travel is the inherent part of my job and I do it by choice. Honestly speaking I do not understand many people that I meet who "feel for me" and do not like to travel at all. Yet they still either do international business or actively participate in global standardization efforts through different standards committee memberships. My response in such case is almost always in the lines of "have you been sentenced to do this job?", which of course may be rude, but ultimately I believe that everyone is the architect of their own fate. And in most fee / democratic ...

I'm about to leave for a 4-week mostly off-grid holidays. This takes some preparation: planning places to visit, updating topographic maps, completing the gear. At the same time I've been preparing my online / electronic side of things for the prolonged absence. This basically includes two things: 1. Minimizing the stuff that will bloat my inboxes. Mostly to avoid the post-absence trauma of dealing with hundreds (if not thousands) of different kinds of notifications and messages. These days just about everything wants keep you "up to date", and this is an enormous trap. The mails and notifications are mostly useless, outdated or conflicting. And they contribute to 90% (or more) of messages you get. So very patiently I have been removing myself from any distribution lists and subscriptions. That has worked, as over the recent days I have been receiving significantly less traffic. Calming and liberating this feels. 2. Making sure the phone battery lasts as long as possi...

Another year behind us - time flies. Steps - wise I more or less matched the 2024 numbers, which I called "definitely below expectations". Now the expectations were trimmed and I am quite happy with the outcome. Yes, lowering expectations is the easiest path to happiness! The knee and ankle injuries took longer to heal than I expected and affected my walking distances at the beginning of the year. 2025 was also very travel - intensive (if not the most!). And especially considering the long distance nature of my business trips, I am quite happy with the amount of physical exercise I was able to put. This physical exercise is BTW the best way to fight jetlag and quickly accommodate to new time zones. So no real downs in 2025 and my total is now about a half of the Earth's circumference: 19667 kilometers (with the watch on). Some TZ changes were quite brutal. In late August I flew from Poland to California (9 hours shift) for the 3-day IES Annual Conference and then overnigh...

Last week I spent almost entirely in Arizona - attending the one of a kind COSM technology conference . It has been the only non-lighting related event for me in 2025. Very valuable, as it has a mixture of politics, philosophy, economy, and - of course - technology. Once Discovery Institute posts the conference videos, I will link and comment on some of them. I the meantime a number of assorted observations. I flew to Los Angeles on Lufthansa Airbus A380. There is a small sections of economy seats on the upper deck. The best seats ever. This plane is so unbelievably quiet. Like a Zeppelin blimp, only much faster. It is a pity they are being withdrawn. The in-flight internet sucked. Completely. I responded to the email with the purchase receipt and they acknowledged the problem, issuing a refund. Probably the simplest refund procedure ever. Then after some business meetings in LA, on the next day a short United flight from LAX to PHX. This one - on the other hand - was equipped with Sta...

I have very mixed feelings about the importance of good user experience (UX) in technology products. Very often ironizing on UX gurus' posts who think UX is super fundamental. Scott Jenson for example have cried rivers over control panels in microwave ovens. True, some of them are quite baroque, and myself - when it comes to microwave ovens - I do prefer just two mechanical dials: power and time. Same for air fryers: temperature and time. But really it does not take a super high IQ to use a microwave oven. A bit higher one is probably necessary to set up an alarm clock in a hotel: 99% of time they show wrong time and then it is unclear which time is the current time and which is the alarm time and if the alarm is on or off. Long gone are the times of travel clocks with the alarm hand and the pop-up "armed" button : nobody needed instructions to operate them. Nowadays even the iOS 26 alarm clock is misleading - if you have an alarm entry that is off and you click it and th...

Apple AirTags are really a great idea. They build on the popularity of iPhones. Periodically broadcasting tiny Bluetooth Low Energy beacons they last for a year or more on a coin cell. And any iPhone acts as a message relaying / geotagging repeater station. Physically being tiny buttons, they can be attached to almost anything - car keys, luggage, any item than can potentially be lost. What is even more exciting (but still not as ubiquitous as it could be), a Find My beacon is a very simple piece of software running on any Bluetooth chip. It can run together with other functions. One great example is the Insta360 GO 3S action camera. The one I actually lost on my way down from Mt Aorai . It was raining on the way down and the clay path quickly became quite slippery. I slid down on my butt a good couple of times (it has some quite steep sections). Upon reaching the shelter at 1400m I realized the zipper in my backpack's pocket was open and the contents (including the GO3S) was miss...

There is a very insightful podcast episode - the interview of Andrej Karpathy by Dwarkesh Patel . At 00:53:39 they mention for about 1 second the 2021 paper by Erik Hoel:  The overfitted brain: Dreams evolved to assist generalization . It is all just a hypothesis, but I must say I've fallen in love with this hypothesis. Not much proof exists yet, but Hoel is really on to something. Dreams are all undiscovered yet. Impossible to get into. Brain activity scans of course can do nothing, as it is like trying to figure out the logic of the software by scanning activity of the microprocessor transistors. Impossible. But surprisingly the recent advancements in AI may get us to better understand how brain works as we try to rebuild an intelligent system in silicon deep neural networks (DNNs). Erik puts forward the overfitted brain hypothesis (OBH): Notably, one of the most ubiquitous challenges DNNs face is a trade-off between generalization and memorization, wherein as they learn to ...