iiinova — where your digital self keeps evolving

Daniel Lakeland @dlakelan.mastodon.sdf.org.ap.brid.gy · 14/10/2026

Oh shit y'all, my kid is auditing PCC classes for a day, sitting in Microecon and he texts me this. The jig is up... 😂

This guy probably knows a decent amount
about economics, but | don't get the
impression that he's an expert at all. It
might just be the way he lectures, but he
gives the impression of somebody who
doesn't know very much. Also I'm pretty
sure everything he's talking about is just a
differential equation. Plus some kid just
walked in and he smells like weed.

Daniel Lakeland @dlakelan.mastodon.sdf.org.ap.brid.gy · 10/10/2026

www.youtube.com/shorts/w9S0etpcA2o My wife sent me that video, finally someone who is teaching the secret about modern music (ie. music since the 1700's or so). It's a scale that's uniform distances on a logarithmic scale for frequency (that is […] [Original post on mastodon.sdf.org]

A uniform MIDI keyboard, with a row of white keys, with a black key between each one.

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Daniel Lakeland @dlakelan.mastodon.sdf.org.ap.brid.gy · 30/09/2026

These people are having a serious conversation about the wickedness of necromancy and the reasons why god needs to smite people and why Halloween is evil and wicked. I am in Pasadena CA... insanity is all around us.

Two people standing in the shade on a sidewalk having an animated conversation about the bible as if it were a scientific report of a detailed experiment with precision measurement Instruments.

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Daniel Lakeland @dlakelan.mastodon.sdf.org.ap.brid.gy · 23/09/2026

Also the most important aspect of git is the "detached head state"

Renee Magritte painting of a man in a bowler hat, the head is detached in the background are mountains, the neck of the man is also mountains, the face is replaced with clouds.

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Daniel Lakeland @dlakelan.mastodon.sdf.org.ap.brid.gy · 21/09/2026

@JessTheUnstill Or run a cyberpunk wireless i2p node and sell linux laptops out of the back, while dressed like Reg from Max Headroom

Reg, from max headroom. He runs a pirate TV station out of a van in the 80's TV show Max Headroom. He's a punk looking guy, with a mohawk and dressed in some kind of leopard print shirt with a scraggly feather boa thing.

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Daniel Lakeland @dlakelan.mastodon.sdf.org.ap.brid.gy · 15/09/2026

Amazing sky over the soccer training field.

Some kind of raspberry sorbet colored sky over an AstroTurf soccer training field with the crescent moon and Venus in the background.

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Daniel Lakeland @dlakelan.mastodon.sdf.org.ap.brid.gy · 11/09/2026

To get actually scaled sense of what's up, here's the log(gdp/commodity) data and also log(ppp) side by side, you can read growth rates off the graph here as the slope of a line fit through the data. If you look at the major developed countries: GBR, DEU […] [Original post on mastodon.sdf.org]

On left, log(GDP/commodity) index, and on the right log(GDP_PPP) you can see growth rates off the graphs for selected colored lines corresponding to GBR, DEU, USA, BRA, CHN, IRL

grey lines for other countries in our dataset.

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Daniel Lakeland @dlakelan.mastodon.sdf.org.ap.brid.gy · 11/09/2026

Last image upload: USA The PPP GDP basically is meaningless right? It's strongly negatively correlated with what people think is going on, while the commodity price normalization is basically sitting on top of the sentiment data like a cat in a box.

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Daniel Lakeland @dlakelan.mastodon.sdf.org.ap.brid.gy · 11/09/2026

More graphs of the countries (limits per post are 4 graphs) The pattern you see is that the red line (standard PPP GDP) is more or less poorly or even negatively correlated with consumer sentiment, while yellow (our GDP/commodity) moves strongly with […] [Original post on mastodon.sdf.org]

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Daniel Lakeland @dlakelan.mastodon.sdf.org.ap.brid.gy · 11/09/2026

All right friends. My student and I finally put together something we're pretty confident about. Here's some plots... In Yellow is our dimensionless GDP measure. In Blue is OECD consumer confidence data. In Red is standard GDP PPP data. I'm cherry picking […] [Original post on mastodon.sdf.org]

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Daniel Lakeland @dlakelan.mastodon.sdf.org.ap.brid.gy · 10/09/2026

The "feels like" temp in my area since Sept 1... Actual temps are pretty similar but a few degrees less, the humidity makes it feel hotter.

From sept 1 to sept 5, feels like oscillated from about 60 to about 85 or 90F each day. Then it was about 70F all day Sept 6, and has been trending up since. highs about 95 Sept 7 and 8, and about 110 today.

Feels like takes humidity into account but actual temps are pretty close to this. peak i saw was 104F today.

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Daniel Lakeland @dlakelan.mastodon.sdf.org.ap.brid.gy · 09/09/2026

This is preliminary data, could have bugs and might be easily improved by pulling in better data etc. But the differences were so stark that I thought I'd let you guys think about them as well... Here is side by side the traditional purchasing power parity […] [Original post on mastodon.sdf.org]

A graph, on left dimensionless GDP vs cost of raw materials, on right purchasing power parity numbers published by world bank.

on the left GDP purchasing power plummets between 2000 and 2010 for all western countries, it moderately recovers with the US on top coming back to maybe 90% of its 2000 value, other countries like Germany are at maybe 60% of their 2000 value.

note data before 2000 is broken due to Euro transition ignore it.

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Daniel Lakeland @dlakelan.mastodon.sdf.org.ap.brid.gy · 05/09/2026

Pepper is on the lookout in Arcadia park.

A tan mid sized dog in a fuschia harness sits in a park, she is looking out of the frame as if on alert

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Daniel Lakeland @dlakelan.mastodon.sdf.org.ap.brid.gy · 03/09/2026

Found this in the middle of our street.... This is madness!

A magazine/catalog for some furniture/home thing called Arhaus

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Daniel Lakeland @dlakelan.mastodon.sdf.org.ap.brid.gy · 28/08/2026

Untagging signal in the rest of this thread. Anyone who wants to look into the wording of the law it's here: www.legislation.gov.au/C2024A00127/… Here's a screenshot of the relevant definition of an age restricted service, the text can be […] [Original post on mastodon.sdf.org]

63C Age-restricted social media platform
(1) For the purposes of this Act, age-restricted social media platform means:
(a) an electronic service that satisfies the following conditions:
(i) the sole purpose, or a significant purpose, of the service is to enable online social interaction between 2 or more end-users;
(ii) the service allows end-users to link to, or interact with, some or all of the other end-users;
(iii) the service allows end-users to post material on the service;
(iv) such other conditions (if any) as are set out in the legislative rules; or
(b) an electronic service specified in the legislative rules;
but does not include a service mentioned in subsection (6).
Note 1: Online social interaction does not include (for example) online business interaction.
Note 2: An age-resricted social media platform may be, but i not necessarily, social media service under section 13,
Note 3: For specification by clas, se subsection 13(3) of the Legislation Act 2003
(2) For the purposes of subparagraph (1)(a)(i), online social interaction includes online interaction that enables end-users to share material for
social purposes.
Note: Social purposes does not include (for example) business purposes.
(3) In determining whether the condition set out in subparagraph (1)()(i) is satisfied, disregard any of the following purposes
(a) the provision of advertising material on the service;
(b) the generation of revenue from the provision of advertising material on the service.
(4) The Minister may only make legislative rules specifying an electronic service for the purposes of paragraph (1)(b) if the Minister is satisfied
that it is reasonably necessary to do so in order to minimise harm to age-restricted users,
(5) Before making legislative rules specifying an electronic service for the purposes of paragraph (1)(b):
(a) the Minister must seek advice from the Commissioner, and must have regard to that advice; and
(b) the Minister may seek advice from any other authorities or agencies of the Commonwealth that the Minister considers relevant, and
may have regard to any such advice.

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Daniel Lakeland @dlakelan.mastodon.sdf.org.ap.brid.gy · 12/08/2026

Here is a photo of the eclipse projection setup I have repeatedly used to show eclipses to kids 100% safely. The light enters the front of the scope, and is projected at right angles onto the paper card or if you like something farther away to get a bigger […] [Original post on mastodon.sdf.org]

$A small refractor telescope is set up pointing at the sun, a right angle prism is attached at the eyepiece and the eyepiece wrapped in red construction paper tube keeping eyes away from the eyepiece. The image projects at right angles across the table to a sheet of paper, the sun appears about 5 inches in diameter with sunspots and the disk of the moon eclipsing it partially.$

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Daniel Lakeland @dlakelan.mastodon.sdf.org.ap.brid.gy · 12/08/2026

Has anyone in the #homeassistant community looked at one of these zemeollo air quality devices available cheap on amazon with an eye toward getting data off it using an ESP32 so you can send the data via MQTT? Does it have any internal comms ports on the board or anything?

An ad for a zemeollo 10-in-1 smart air quality sensor for $30 but it has no obvious reporting features other than the screen, no ZigBee or matter or other radio tech as far as I can tell.

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Daniel Lakeland @dlakelan.mastodon.sdf.org.ap.brid.gy · 27/07/2026

Me looking at the trajectory of the world...

A small brown dog with bug eyes and a tremendously anxious look on its face is leashed to a wall at an animal shelter.

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Daniel Lakeland @dlakelan.mastodon.sdf.org.ap.brid.gy · 26/07/2026

So, I built a little minimal config for my new #guix server, enabled all my lvm volumes and opened all my luks volumes and mounted shit around places, and then tried guix system init /mnt/newroot/ And I get errors that are basically uninterpretable (alt […] [Original post on mastodon.sdf.org]

$1331:8 18 (call-with-build-handler #<procedure ?fbOBf1f53cO at g.> .) 212:25 1? (run—with-store #<store—-connection 256.100 ?fbB18f3rfee> .) guixsscripts/system.scn: 862:2 16 (_ ) ?35:8 1S (_ u<store-conmection 256.100 7fbO18f 3F rO0>) \ gnussystem.scm: 1346:19 14 (operating-system-derivat ion _) Nn gnusservices.scm: 1391:16 13 (_ Nn guixs/monads.scm: 475:9 12 (_ In gnusservices.scn: 1391:16 11 (_ In guix/monads.scm: 4?5:9 10 _ In gnusservices.scn: 1394:36 9 (_ In srfisrsrfi-1.scm: : 586:29 8 (mapl (#<<service> type: fi<service-type Swap ?fbO0Gdc.> .)) 586:17 7? (mapl (#<<service> type: #<service-type file-systems.> .)) In gnurservices base .scm: 542:11 6 (f ile-system—shepherd-services <9 In srfisrsrfi-1.scm: 586:17 5S (napil (#<<file-system> device: #<file-system—label .> .)) In gnusservices base .scm: 434:29 4 «f ile-system—shepherd-service #<<file-system> device: #.>) In srfisrsrfi-1.scn: 586:17 3 (mapl (“-*)) In gnurserv ices/base.scn: 411:2 2 (dependency->shepherd—-serv ice—mame _) In ice-9-boot-9.scm: 1685:16 1 (raise-exception _ #:continuable? . J 1685:16 a (raise—exception — ®:continuable? _) ice-9-boot-9.scn: 1685 16: In procedure ra ise—exception: Throw to key ‘match-error’ with args "(“match® “no match ing pattern” ".")-*_ [END FN 5) \ fi$ $(1 » ~ed by bootloader : » @-luroot’ may be ignore loader Jp——— ing: mapped device ’'~sdevsug 1’ may be ignored by bootloa 700 deskserver .scm:89:18: warning : 6 * ,dev-ugB-Lvhome Sr deckserver .scn:93:18: ei or a and ‘a ysbotfhe ~~ ome2’ may be ignored by bootloader root-deskserver .scn:98:10: warn os vie Chete LUKS UUID. hint: Specify mapped device sourc Backtrace: In prog FR 699:37 1 thu 1331:8 18 (call-with-build-handler #<procedure ?fbO@f1f53cO at g.> .) 2212:25 17 (run—with-store #<store-conmection 256.100 2fbB18£f3FFf0B> .) In guixs/scripts/system.scm: 862:2 16 (_ ) : 735:8 15 (_ #<store-conmmection 256.100 7fbO18f3ff00>) In gnussystem.scm: 1346:19 14 (operating-system—derivation _) In gnusservices.scm: 1391:16 13 (_ ) In guix/monads.scn: 475:9 12 _ ) In gnusservices.scm: 1391:16 11 _ ) In guix/monads.scn: 475:9 18 _ In gnusservices.scn: 1394:36 9 (_ In os dri i-1.scm: 29 8 (mapil (#<<service> : 586:17 type: B<service-type swap 7fb@Bdc - ts Ben, Ba vice> type: #<service-type i 22 542:11 6 : “ . a In SE irseri-1 som: Do ShePherd-services 2d 1? S (mapl (m<<fi In gnu ser ile-system> device: @ i al UT hase. som: <file-system—label >.» | n SPfissrfi-1. gem: Don Shepherd-service s<<r | P—— : . 586:17 | (map1 ™',")) > device: %.>) = | A @ \\ ee oo A ad Ai ull B | 2% ! a$

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Daniel Lakeland @dlakelan.mastodon.sdf.org.ap.brid.gy · 25/07/2026

Computers are like a bicycle for the mind... --Steve Jobs the Bicycle:

A tall bicycle with one person stacked on top of another person is driving down a heading towards the left of the frame, in the background are agricultural fields, a mountain, and some rain clouds. The bike riders are wearing rain ponchos which are flowing in the breeze. Stuff is strapped to the bike. The whole thing is about 12 feet tall.

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Daniel Lakeland @dlakelan.mastodon.sdf.org.ap.brid.gy · 25/07/2026

Here's the best pic I have that doesn't have the employees face in it. Look at that derp with full intact ears and tail.

A picture of a 1 year old doberman pup looking at a treat in the hand of a humane society employee.

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Daniel Lakeland @dlakelan.mastodon.sdf.org.ap.brid.gy · 20/07/2026

OK fediverse I dont follow this bot and it doesn't appear to have put any tags in this post, so WHY is it in my home timeline? Ive been noticing this a bunch recently, and not just this bot, multiple accounts getting posts snuck into my timeline. Seems like […] [Original post on mastodon.sdf.org]

A screenshot showing the offbeat Amsterdam not in my home timeline. there are no visible tags and I dont follow this bot.

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Daniel Lakeland @dlakelan.mastodon.sdf.org.ap.brid.gy · 25/06/2026

I wish there were an ongoing data collection process corresponding to this graph from a paper documenting historical trends www.researchgate.net/figure/CPU-per…

From 1995-2003 speed grew at 64% per year, after about 2004 things grew at about 21% per year (a graph from the linked article)

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Daniel Lakeland @dlakelan.mastodon.sdf.org.ap.brid.gy · 22/06/2026

The effects of systemic poverty, redlining, drug wars, educational gaps and various misc problems are visible in the large gaps where air quality sensors are simply not installed. Compton, Lynwood, Watts, South Gate, Huntington Park, places off the track […] [Original post on mastodon.sdf.org]

PurpleAir in the LA basin. Numbers mainly range from 0 to 25 or so there is a giant gap of sensors in the South-Central LA area.

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Daniel Lakeland @dlakelan.mastodon.sdf.org.ap.brid.gy · 21/06/2026

At the LA arboretum, our friend a cellist is playing in the symphony, a night of mostly movie music, with a view of the mountains, air quality massively improved compared to this morning.

Tons of tables on the grass with a backdrop of the San Gabriel mountains. thousands of people are here for a Pasadena Pops concert at the LA Arboretum in Arcadia

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Daniel Lakeland @dlakelan.mastodon.sdf.org.ap.brid.gy · 20/06/2026

My son and I used Maxima and some integration to derive the expressions for kinetic energy of a solid rolling ball, and then used that to calculate g from the various rolling data we have (d and t), this is from rolling balls down a plane, as well as a track […] [Original post on mastodon.sdf.org]

A density plot of estimated values for g in cm/s^2 with a peak in the range about 900-1100 and tails ranging from 400 to about 1600

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Daniel Lakeland @dlakelan.mastodon.sdf.org.ap.brid.gy · 16/06/2026

Alex's idea of rolling a magnet down a magnet board was a pretty good idea, so when he had his friend over, we ran the experiment. We did it at a high angle, and directly vertical. We also dropped the magnet in free space... Dropping was from a low height […] [Original post on mastodon.sdf.org]

Acceleration vs sin of the angle at which the board is tilted. Or freefall at sin(theta) = 1.

The freefall is about 1200 cm/s^2 on this data, but rolling only 500 or so at vertical angle

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Daniel Lakeland @dlakelan.mastodon.sdf.org.ap.brid.gy · 15/06/2026

So, when you think about what happens to a ball that keeps it rolling down the track or falling until it hits the floor and then stopping that same thing should be happening to the surface of a scale, after all the balls stop falling when you drop them into […] [Original post on mastodon.sdf.org]

A graph of the indicated mass in grams on a digital scale when adding 1, 2, 3... up to 10 precision steel bearing balls to the weigh boat. Fit to a line y ~ n + 0, the points are indistinguishable from the line, which has slope 8.349 +- 0.005

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Daniel Lakeland @dlakelan.mastodon.sdf.org.ap.brid.gy · 14/06/2026

Whoops, the previous graph was cutting off data points above the plot... here's the full dataset for freefall

Same graph as before with different slopes and then freefall (sin(theta) = 1) But including the full scatter of the free fall data. Free fall data ranges from 600 to 1300 or so, the linear fit still suggests 953 cm/s^2 as the best fit but it's more visually obvious why that's the center of the scatter

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Daniel Lakeland @dlakelan.mastodon.sdf.org.ap.brid.gy · 14/06/2026

This morning, Alex and I extended our investigation of rolling by rolling a marble down a piece of crown molding at higher angles. We then dropped the same marble from various heights, limited by the ceiling height. Small heights lead to big errors in timing […] [Original post on mastodon.sdf.org]

Data points for rolling and freefall. The rolling extrapolates to about 6.6m/s^2 at vertical, but actual freefall extrapolates to about 9.5 m/s^2

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Daniel Lakeland @dlakelan.mastodon.sdf.org.ap.brid.gy · 13/06/2026

@johncarlosbaez For small angles, sin(x) ~ x and for our experiments, acceleration is proportional to sin(angle) or angle... We can only tease out the difference if we go to larger angles, and maybe higher precision measurements.

Using a GLM fit forcing the line through (0,0) the estimated acceleration is proportional to the sine of the angle (or the angle since they're all small less than about 0.12 radians)

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Daniel Lakeland @dlakelan.mastodon.sdf.org.ap.brid.gy · 13/06/2026

If our assumption of a linear function is correct, and the acceleration doesn't depend on the ball's material, then we would get a fairly flat estimate across the different ball sizes. We see a flat estimate across ball diameter, and ball density:

Data indicates about 45cm/s^2 for low slope and 78cm/s^2 for higher slope independent of ball size

Data indicates 45 cm/s^2 and 78cm/s^2 for low and high slopes, independent of ball density.

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Daniel Lakeland @dlakelan.mastodon.sdf.org.ap.brid.gy · 13/06/2026

I got the data file my son took from our measurements yesterday. Rolling solid balls down an incline. Rather than teaching him how physics works and then testing it with some experiments, we are trying to create a sequence of experiments where we can find […] [Original post on mastodon.sdf.org]

A plot of Time vs Distance rolled along board. there are two groups of points for each x axis, blue points above, and red points below. The blue represent a low slope (4.2 cm high at high end of board) vs higher slope (6.0 cm of rise)

Lines through the data clearly don't go through 0,0 so the function isn't linear.

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Daniel Lakeland @dlakelan.mastodon.sdf.org.ap.brid.gy · 04/06/2026

These three components correspond to getting fatter by gaining waist as well as hips together, (orange), getting bigger by gaining waist mainly (men? blue). And switching from female to male causing a shift upwards in waist/hips because women tend to have […] [Original post on mastodon.sdf.org]

A graph of men and women waist/height vs waist/hips

Three principal component vectors are seen projected from the 3D space of waist/hips, waist/height, and sex onto the 2D plane.

The orange vector points up and slightly to the left, the blue vector points up and strongly to the right. the pink vector points up and to the right but has a large component in the out-of-plane (sex direction) so projects as short in the x,y plane.

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Daniel Lakeland @dlakelan.mastodon.sdf.org.ap.brid.gy · 04/06/2026

onlinelibrary.wiley.com/doi/full/10… These researchers reimplemented the Limits To Growth model in Python, it's available on their linked github. github.com/TimSchell98/PyWorld3-03 They then use an iterative method to […] [Original post on mastodon.sdf.org]

Many different stats are plotted through time from the model predictions.

Population would reach a peak in about 2026 and decline to half its current size by 2075

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