2025-12-23 21:00:00
Every time someone releases code publicly under some kind of "look but don't touch" terms a similar argument plays out:
A: This is cool, X is now open source!
B: It's cool that we can read it, but we can't redistribute etc so it's not "open source".
A: Come on, if it's not "closed source" it's "open source".
B: That's not how the term "open source" has historically been used. This is why we have terms like "source available".
A: It's bizarre that "open" would be the opposite of "closed" everywhere except this one term.
I'm generally with B: it's very useful that we have "open source" to mean a specific technical thing, and using it to mean something related gives a lot confusion about what is and is not allowed. While A is right that this is a bit confusing, it's also not unique to open vs closed source. Some other examples:
If a country doesn't have "closed borders" then many foreigners can visit if they follow certain rules around visas, purpose, and length of stay. If instead anyone can enter and live there with minimal restrictions we say it has "open borders".
If a journal isn't "closed access" it is free to read. If you additionally have specific permissions around redistribution and reuse then it's "open access".
If an organization doesn't practice "closed meetings" then outsiders can attend meetings to observe. If it additionally provides advance notice, allows public attendance without permission, and records or publishes minutes, then it has "open meetings."
If a club doesn't have "closed membership" then it's willing to consider applicants. If anyone can join who meets some criteria, it has "open membership".
This is just how language works: terms develop meanings that are not always ones you can derive simply from the meanings of their component words. I agree it can be confusing, but I also want to do my part to resist semantic drift and keep "open source" matching its useful and socially beneficial definition.
2025-12-14 21:00:00
My house has radiators for heat. There are three heating loops ("zones") but the house has more than three rooms and it's not very well balanced. Fixing this properly involves hiring a plumber, but it turns out we can make it much better with just a small fan!
Radiators heat passively: they warm the nearby air, which rises and allows cooler air to flow in. This new air then warms, and the cycle repeats. This works pretty well: no electricity, no noise, just smooth heating.
What we can do with a fan, though, is accelerate this process in a targeted way, at the cost of a small amount of electricity, hardware, and noise. By fanning the radiator we want more output from, we can bring the system into balance.
I'm now tempted to put efficient little fans on all the radiators in the house, network them together, add temperature and occupancy sensors, predict future occupancy, and see how much more efficient I can make the whole system. But while this sounds like a fun project, and possibly even something someone could turn into a product that pays for itself in saved money and fuel, [1] this is really not something I should take on right now.
[1] I did some looking and there are (a) commercial radiator booster
fans, and (b) smart radiator valves, but nothing that ties this all
together.
2025-12-13 21:00:00
Far-UVC is something people have talked about for years in a "that would be great, if you could buy it" sort of way. Coming soon, once someone actually makes a good product. But the future is now, and it costs $500.
Many diseases spread through the air, which is inconvenient for us as creatures that breathe air. You can go outside, where the air is too dilute to spread things well, but it's cold out there, and sometimes wet. You can run an air purifier, but cleaning lots of air without lots of noise is still the world of DIY projects. Ideally you could just shine some light, perhaps in the 222-nm range, which would leave people alone but kill the viruses [1] and bacteria. Yes, let's do that!
Last year if you asked "if far-UV is so great, why isn't it everywhere?" one of your answers would be:
There are very few providers, and hardly any of them sell an off-the-shelf product. You usually can't just buy a lamp to try it out—you have to call the company, get a consultation, and often have someone from the company come install the lamp. It's a lot of overhead for an expensive product that most people have never heard of.
This has changed! You can buy an Aerolamp for $500, shipped. Proudly displayed at Thanksgiving:
Here are five four
silently cleaning a whole lot of air at a dance I help organize:
At $500 this is out of (my) Christmas gift range, but I think we're now at the point where dances, churches, offices, rationalist group houses, schools, etc. should consider them.
(I have no stake in Aerolamp and they're not paying me, I'm just very excited about their product.)
[1] Ok, yes, I know viruses "can't be killed" because they're "not
alive", but far-UVC causes them to become unable to infect and
replicate which is close enough to "killed" for me.
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2025-12-12 21:00:00
My current setup for playing dances is a bit excessive, and I transport my pedalboard in an old hardshell suitcase. [1] There's no built-in padding, so I use sheets of foam to protect my equipment. Initially I just had these loose, but this was one more piece to deal with, so I decided to permanently attach them to the suitcase.
It's tricky to bond foam to plastic, but after some LLM-assisted searching it seemed like 3M 90 spray adhesive was a good choice. I followed the instructions (outside!) and attached my foam sheets to the case:
I was going to write something up right away, but I was wary of the dynamic where I write when something is new and exciting but before I know if it will last. Would the sheets just fall off again?
It's now been four months, including six gigs with Kingfisher, three with the Free Raisins, and one with Dandelion. [2] Four of these involved flights, which with the rough handling and temperature swings are probably the worst abuse the case will get. And... it's great! I haven't had any issues, and they still seem well attached. I guess I could have written the post when I had that just-did-something-new energy after all!
[1] I looked into lighter
options but everything was super expensive and I couldn't find
good used options.
[2] Somehow I ended up playing a very large fraction of my dances for the year this fall. This was more than currently makes sense given work and family, and I'm going to try to spread things out a lot more.
2025-12-11 21:00:00
The gates in the lobby of my workplace annoyed me for years: they would often reject my access card, and I'd need to tap several times. After a while I realized that the reader was getting confused by the other RFID cards in my wallet, and if I pulled the card out of my wallet first it worked every time.
This turned out to be very easy to fix: tape a piece of tinfoil to the back of my access card:
I feel a bit silly that after spending months pulling the card out each time the fix ended up taking me a couple minutes. I often decide to put up with minor annoyances instead of thinking about whether there's a way to fix them, and I think overall that has made my life substantially better, but in this case even a little thought would have been well worth it!
2025-12-06 21:00:00
On a road trip there are a few common options for food:
Bringing food or going to a grocery store are the cheapest (my preference!) but the kids are hard enough to feed that we often buy prepared food when we're traveling. [1] And they often prefer food that takes a while to make (usually pizza) over what you can get in a drive through. A couple years ago I realized there's another option: calling in an order for pickup to where you'll be soon.
We'll use Google Maps "search along route" to identify a place ~30min out, and phone in an order. [2] By the time we arrive, the food is ready. We can combine the speed (and buffer maximization) benefits of drive throughs, with the variety of options from the wide range of restaurants that offer pickup.
[1] I'm also working on getting them to do better with brought food,
but I'm focusing on lunch at school here because that's a much larger
portion of their food away from home.
[2] It kind of amazes me that pizza places will take the costly action of preparing a pizza to my specifications based on a simple phone call, with no contact information beyond me giving a first name. I mean, it's great, but like so many things in our society it only works because there are extremely few people want to cause havoc and are willing to put any effort into doing so.