I make f.lux, models, and data to understand circadian and sleep behavior. Previously: Picasa co-Founder/CTO, Google, MetaCreations, CMU.
California, USA
Joined July 2006
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I just published "Why Standard Time is better" link.medium.com/tgYAui3tdV
iOS measures "time in daylight" for myopia, though advice is strange. Myopia intervention studies adjust "time for recess". 120 minutes outdoors at school is not the same as 80-120 minutes total & also the dose-response goes past 2hrs/day.
See ncbi.nlm.nih.gov/pmc/article…
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Lots of good arguments here. But mainly - CPI is getting overused as "affordability" when it's not... doesn't consider the cost of debt, and the economy recently is based on debt. e.g., car prices can go down while monthly payments go higher.
open.substack.com/pub/mattst…
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I’m a fan of normal portrait lengths, so feels like something’s missing from the iPhone 15 pro max—an optic between 24mm and 120mm. That means you’re shooting 3x zoom using 10% of the sensor (1-4 megapixel depending how you count AI/quad Bayer stuff, but it’s not much!)
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There should really be a kind of contract law for "building on someone else's platform" - by now there are enough Unity/Google Maps/etc. rug pulls that you could imagine what platform owners might reasonably owe people who put years of work into them. Otherwise it's only serfdom.
Also, 72% increase before lifestyle corrections (since chronotype has a large impact on lifestyle).
Investigators from @BrighamWomens found evening #chronotype, or going to bed late and waking up late, was associated with a 19% increased risk of #diabetes after accounting for lifestyle factors. ow.ly/uMhS50PLBzu
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Unity: "we are going to track reinstalls and not charge you"... bizarrely ignoring last 6 years of Apple privacy changes.
theverge.com/2017/4/23/15399…
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Limiting iPhone 15 to USB 2.0 speeds takes me back 20 years... when we had 180nm CPUs (rather than 3nm) and read Compact Flash cards from our DSLRs at 30MB/sec, the *exact same speed* you can use to backup your iPhone 15 next week.🤨20 years, it's amazing.
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There's basically no amount of money you can pay a developer (outside Apple) to say "set my iPhone alarm to wake me up on weekdays but please *skip* national holidays".
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The mistake in this Cochrane review is letting marketing dictate what scientific terms mean. Here "blue light filtering" means "UV filtering plus a few percent of blue". The plain-language meaning of "blue light filtering" is not met.
Really interesting new Cochrane review out looking at blue-light blocking glasses and health
There were over a dozen RCTs into the question, but most of them were terrible
The one decent trial found no benefit
cochranelibrary.com/cdsr/doi…
Making people wake up before the sun continues to be a bad idea. Here it increases suicide.
Longitude-based time zone partitions and rates of suicide
Across the U.S., western partitions had statistically significantly higher rates of #suicide compared to eastern partitions and averaged up to two additional yearly deaths per 100,000 people.
sciencedirect.com/science/ar…
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A decade ago, Facebook let companies advertise to people who liked a competitor's page or group, and it was very cheap to do this. I'm sure it was profitable enough in the short term, but *many* brands stopped making pages & groups. I wonder what the long term cost was.
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Interesting - *on the night shift*, early birds get c19 at a much greater rate than night owls. Wonder if it's the reverse for daytime jobs?
pesquisa.bvsalud.org/global-…
It's important that Parental Controls has a "disable feeds and recommendations" setting, which doesn't currently exist. 1/n
A popular thread debunking the candle, which is not good for your lungs. 🥹(Also it makes triple its weight in co2.)
1/ Candle Talk
Approximately 70% of US homes have one or more cancles, with an estimated 1 billion pounds of wax used in US candles sold each year according to the National Candle Association (NCA).
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Everyone who said LEDs broke the Rebound Effect, nope you're wrong, they've kept it going. [Saunders/Tsao 2012]
This newly built Las Vegas sphere cost $2.3 billion and uses 150 terawatt-hours of electricity per year to power the massive screen.
That's almost double the yearly power consumption of Bitcoin.
Wait until the climate people see this...
Readers added context they thought people might want to know
This extraordinary claims lacks any evidence.
"580,000-square-foot LED canvas"
edm.com/news/vegas-sph…
Even with a pessimistic estimate of 100 watts per square foot, we get 58 mega (58 x 10^6) watts. Far shy of Bitcoin's estimated 127 terra (127 x 10^ 12) watts.
rmi.org/cryptocurrency…
If mobile platforms were doing what actual *people* wanted, you could simply aggregate all these competing feeds into one interface.
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Long COVID GWAS:
rs9367106 and the proxy (rs12660421) not on 23andme chip that I can see, but says the phenotype is prevalent in Finnish and East Asian ancestry.
A genetic risk factor for the development of #LongCovid!
A new study identified the first genome-wide significant association for #LongCOVID at the FOXP4 locus. 1/
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