Tailored clothing is at least 80,000–170,000 years old based on genetic clock research in body lice [1] but archaic humans have probably been wearing hides for at least a million years (there’s currently a big debate about how they managed to migrate to colder climates like Spain 800k-1.2m years ago).
I don’t think clothing is that big a factor because all humans in hot environments adapt and very little survives in the archaeological record. Many populations lived in heavily forested jungles where they was little sun exposure and those in deserts used stuff like Otjize for sun protection. Given all the ethnographic reporting from the age of exploration, tons of that clothing was probably made of feathers, cordage, bark, and other materials we wouldn’t even think of using for clothing.
Still, 170,000 - 1.2M years is a fairly short amount of time if we go back only to the common ancestor who begat progeny that would become Pan and Autralopithecus (around 12 million years ago). It could be that early hide wearers started a trend that, to this day, continues to interfere with natural vitamin D metabolism (while also providing many benefits).
Our ancestors started losing their hair about 2 million years ago and the MC1R gene giving us eumelanin pigmentation was fully fixed in the population around 1.2 million years ago by which point we were mostly hairless. In that range is when our vitamin D metabolism evolved, so clothing would have been present for large fractions of our existence.
Going back to a common ancestor with monkeys is pointless because their vitamin d pathways are significantly different like 7-dehydrocholesterol secretions that metabolize to vitamin D via external UV exposure and are ingested during grooming.
ESP32 RGMII (32x) -> PHY (32x RTL8211F) -> Slave switch (6x RTL8367) -> master switch (1x) -> magnetics (for the external port). You’ll probably want a better IC for the master switch so I can’t name one of the top of my head but this would be a relatively simple, if large, PCB.
The hard part I think is verifying that all the PHYs and switches will work correctly without magnetics on a board to board connection.
The SoC (I was thinking about the Octavo parts) has two ethernet interfaces. We attach the interfaces to the RTL8211 and then to the switch (or do we need RTL8211s there as well? Is there a switch chip that can operate directly with the SoC ethernet ports?
I am way out of my depth here. I actively avoided analog design in college, and it kind of shows. :-(
There are switches that have MAC-to-MAC skipping the PHY but only on one or two ports. I don’t know of any switch ICs that have more than two so you need to bring your own RTL8211 PHY for the rest of the ports anyway. You can just connect the SoC’s PHY directly to the switch’s ports, skipping magnetics.
There isn’t much analog design here, except the high speed digital signals for which you can just follow some basic rules of thumb (and IC routing guidelines!). You need to length match the busses and correctly route the differential pairs between the PHY and switch. If you know how to use Altium (I assume Kicad has similar features) you can do pin and part swapping with some clever placement to route only a few of the busses as short as possible, then clone them as rooms until you’ve got the number of nodes you need. The last bit will be routing the master switch that connects the slave switches and the external port.
If you’ve never done it before I’d be realistic and try to hit 100mbit first, maybe gigabit interconnection between the switches. The routing you’ll need at those slower speeds will be a lot more forgiving.
It's a little both funny and awkward to see all these jokes about Freud while in my particular case "patient was traumatized by dysfunctional family, also patient has incestuous desires" is 100% correct.
Also, I suspect that in 5 to 10 years these ideas will go back to mainstream, especially considering the current fad of calling everyone "daddy" - that word is slowly moving from underground gay fetish into mainstream, and I assume that it didn't appear out of the blue.
> the current fad of calling everyone "daddy" - that word is slowly moving from underground gay fetish into mainstream, and I assume that it didn't appear out of the blue.
That's been in mainstream straight porn for at least twenty years.
All of which are trivial for a user to override, disable, or ignore completely except the primary airbags, which I believe is the whole point. The user is in control and its all in the owner’s manual to boot.
Many are not, and ma y of the ones in the pipe line, like speed limiters and drunk driver detection are going to be legally mandated to be nondisableable..
But the National Flood Insurance Program will, with plenty of federal bailouts.
Private insurers haven’t been willing to cover large parts of the south for decades. The NFIP was the backstop and already overstretched when Katrina hit New Orleans, which is when it first got bailed out. It’s been a downward spiral ever since.
Other examples include Mozilla Foundation and Mozilla Corporation, the latter of which pays taxes on the money it gets from Google for default search engine placement, and the Smithsonian gift shop, which is a common pattern for museums all over the country. Novo Nordisk is another example, maker of Ozempic, and it’s the richest foundation in the world because it spun off a for-profit that then went public.
IRS requires nonprofits to pay taxes on “unrelated business income” and spinning it off to a for-profit subsidiary is the least risky way of managing that revenue.
It shows up on social media when it’s a rare event for that area. It’s uncommon but “happens all the time” here in California in the deserts every heavy rain either because locals forget how deep the flood control washes are, or because tourists just drive into them thinking its a straight road, despite all the signs and warnings posted around them.
They were originally built for military logistics to move troops, guns, and supplies around the country.
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