Daniel Lakeland
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dlakelan.mastodon.sdf.org.ap.brid.gy
Daniel Lakeland
@dlakelan.mastodon.sdf.org.ap.brid.gy
Applied Mathematician, Julia programmer, father of two amazing boys, official coonhound mix mutt-walker.

PhD in Civil Engineering. Debian Linux user since […]

[bridged from https://mastodon.sdf.org/@dlakelan on the fediverse by https://fed.brid.gy/ ]
I feel like a good explanation for much of the modern world is the concept from George Akerlof... The market for lemons.

When consumers know that sellers are cheating them through superior information, they become unwilling to pay for quality (because they assume they can't discern it). Then […]
Original post on mastodon.sdf.org
mastodon.sdf.org
December 8, 2025 at 4:07 PM
Watching The Goes Wrong Show again. Quality.
December 8, 2025 at 6:39 AM
I could totally go around setting up little Mini PCs and homeassistant and thermostats and lights and such for people. But, how much would a typical person actually pay for such things? Like if I did 5 a month and made $1000 profit above cost of materials I could do that as a nice occasional gig […]
Original post on mastodon.sdf.org
mastodon.sdf.org
December 8, 2025 at 4:02 AM
I took my wife out to hear some jazz the other night and now she keeps asking me when we are gonna go have a date again... I just ask her if she prefers Deglet Noor or Medjool.
December 7, 2025 at 8:37 PM
Y'all can be jealous of my wife whose boyfriend makes the best breakfast baked goods.
December 7, 2025 at 8:25 PM
Both my kids want Switches for Christmas... So I got a couple Netgear ones free off Buy Nothing.
December 7, 2025 at 7:44 PM
Reposted by Daniel Lakeland
Tough scroll for FOSS this morning, something shady going on with Calibre, something shady going on with SyncThing, something shady going on with F-Droid, it's almost as if free software has a functional society as one of its dependencies and none of this shit works in a social environment where […]
Original post on retro.social
retro.social
December 7, 2025 at 2:49 PM
My wife is back from her trip and I'm more or less getting well from the stupid cold. So the whole family watched The Minecraft Movie for a laugh. My kids thought it was great, silly but fun. The younger one particularly liked the reference to Technoblade.
December 7, 2025 at 6:18 AM
Was trying to help my sister book tickets to visit for Christmas and in the middle of the whole thing her ex coworker calls her from the urgent care where shes checked herself in for psych issues, because shes a whistleblower at a federally funded clinic where shes discovered the bosses are […]
Original post on mastodon.sdf.org
mastodon.sdf.org
December 7, 2025 at 2:59 AM
Reposted by Daniel Lakeland
Today someone I know slightly was sentenced to 30 months in prison, and sent to a high security facility. Their crime was disrupting traffic - they and others climbed a gantry on the M25, the major orbital round London, to drop banners protesting at government inaction in climate change.

If a […]
Original post on dair-community.social
dair-community.social
December 5, 2025 at 10:24 PM
Theres a great method for extracting pomegranate seeds. Cut the fruit in half, make scores around the edge of a half, hold it with the cut half down in your hand place the hand over a bowl and spank the back of the pomegranate hard with a wooden spoon... Also its a very Fedi method did I mention […]
Original post on mastodon.sdf.org
mastodon.sdf.org
December 6, 2025 at 10:07 PM
Just fire up Asma Hamzaoui and listen for a while.
December 6, 2025 at 3:43 AM
ChapGPT... it's a chatbot that speaks like Mr B The Gentleman Rhymer or Professor Elemental
December 5, 2025 at 4:12 PM
Whenever I get a beautiful 20 something womans account following my account I click to see if it has any posts or followers, if there are like 3 meaningless posts, 3 followers, and 85 people followed its pretty obviously a bot. Anyway, if you are an actual beautiful 20 something woman, at least […]
Original post on mastodon.sdf.org
mastodon.sdf.org
December 5, 2025 at 2:33 PM
Any #mathematics professors want to take a shot at explaining to someone with say a typical math major undergrad background what the deal is with the recent introduction of exacting and ultraexacting cardinals?

#math #maths #settheory #zfc

https://arxiv.org/abs/2411.11568
Large cardinals, structural reflection, and the HOD Conjecture
We introduce exacting cardinals and a strengthening of these, ultraexacting cardinals. These are natural large cardinals defined equivalently as weak forms of rank-Berkeley cardinals, strong forms of Jónsson cardinals, or in terms of principles of structural reflection. However, they challenge commonly held intuition on strong axioms of infinity. We prove that ultraexacting cardinals are consistent with Zermelo-Fraenkel Set Theory with the Axiom of Choice (ZFC) relative to the existence of an I0 embedding. However, the existence of an ultraexacting cardinal below a measurable cardinal implies the consistency of ZFC with a proper class of I0 embeddings, thus challenging the linear--incremental picture of the large cardinal hierarchy. We show that the existence of an exacting cardinal implies that V is not equal to HOD (Gödel's universe of Hereditarily Ordinal Definable sets), showing that these cardinals surpass the current hierarchy of large cardinals consistent with ZFC. Moreover, we prove that the existence of an exacting cardinal above an extendible cardinal implies the "V is far from HOD" alternative of Woodin's HOD Dichotomy. In particular, it follows that the consistency of ZFC with an exacting cardinal above an extendible cardinal would refute Woodin's HOD Conjecture and Ultimate-L Conjecture. Finally, we show that the consistency of ZF with certain large cardinals beyond choice implies the consistency of ZFC with the existence of an exacting cardinal above an extendible cardinal.
arxiv.org
December 5, 2025 at 4:00 AM
The temperature in my wife's parents house in New Jersey with hot water boiler heating is SOOOO much more constant than in my house with forced air heat pump in SoCal. Now admittedly we are trying to keep it fairly cool to save energy but its really like a constant temp at all times compared to […]
Original post on mastodon.sdf.org
mastodon.sdf.org
December 4, 2025 at 10:45 PM
Apparently an entity can only be in one map zone at a time in #homeassistant ? I have a big zone for all of the socal area, and another for the region within 5-10 miles of my home, and of course the default home zone. They're all nested in each other... If I'm at home, I'm not in socal. That […]
Original post on mastodon.sdf.org
mastodon.sdf.org
December 4, 2025 at 1:22 AM
Reposted by Daniel Lakeland
If you think that DOGE was anything other that an international data theft ring, I dunno what to say.
December 3, 2025 at 10:54 PM
The most important personal security advice from last nights talk.
December 3, 2025 at 6:01 PM
A useful DNS idea.

Create a dynamic dns daemon to serve entries for:

<yourpublickey>.ed25519.yourdomain.tld

Basically you sign a message saying "set AAAA to 2001:db8::123" and send it to the server. The server changes the AAAA record for your entry, and stores a txt message with your signed […]
Original post on mastodon.sdf.org
mastodon.sdf.org
December 2, 2025 at 10:37 PM
If there are two companies, and one of them figures out a way to make the product cheaper, and starts selling at a lower price, why do we call that "competition" and not "the company cooperating with its customers"?
December 2, 2025 at 7:54 PM
My first job out of college was at a company in SF called MondexUSA. It was a licensee of some tech from the UK I think, anyway the product was a stored value card that used cryptography to prevent fraud. No central processor of transactions was needed... It was digital "cash". The company was […]
Original post on mastodon.sdf.org
mastodon.sdf.org
December 2, 2025 at 3:35 PM
Are you in the #altadena or #pasadena area and want to know more about online safety from scammers, surveillance, and soforth? Or know someone who does?

Tomorrow I'm giving a talk at the main Altadena library 6-7pm on related topics. You'll learn about real world dangers online and some […]
Original post on mastodon.sdf.org
mastodon.sdf.org
December 2, 2025 at 5:43 AM
since some of you may be following the follies of my remote tech problems... cousins went to the house, walked through some diagnostics.. comcast had stopped giving IP addresses to my router VM. power cycling comcast's device didn't work. Reset to factory by holding the button for 45 seconds did […]
Original post on mastodon.sdf.org
mastodon.sdf.org
December 2, 2025 at 12:47 AM
Reminder that entering this season of #christmas music, there is really only one acceptable solution... The Charlie Brown Christmas album.

(Bonus points if you do the dance this Orange shirted kid is doing whenever you hear Linus and Lucy)

https://www.youtube.com/watch?v=s1LUXQWzCno

#jazz
December 1, 2025 at 5:48 PM