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_Adam

533 karma · joined September 19, 2013

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_Adam··on CEO test-drives Mojo Vision's smart augmented reality contact lens
They have flexible PCB on a contact lens, and an anecdote by the CEO. "Functioning" is too generous.
_Adam··on The impact of childhood lead exposure on adult personality (2021)
I measured the concentration of lead in the hot water from my kitchen faucet. My plumping is copper with lead solder, so I expected some but not too much.

The result was 105 ppb. This is insane when you consider that Flint's level was 20 ppb during the crisis.

The cold water should be zero, but I installed a lead filter to ensure this.

Lead testing is pretty cheap and there are usually a lot of labs around big cities. Highly recommend water testing even if you don't think you have the risk factors.

_Adam··on MIT researchers develop a paper thin loudspeaker
66 dB at 1kHz

86 dB at 10kHz (ouch my ears)

This is not at all flat and the implementation suggests it has low gain at lower frequencies. Without publishing of a full response curve this seems like nothing more than university PR.

Any comment from the authors of the study?

_Adam··on Two-minute battery changes push India’s delivery riders to switch to e-scooters
If anyone is curious about how this started, Asianometry (a favorite channel of mine) has a video about how Gogoro built their network in Taiwan

https://youtu.be/xZigLuaijsI

_Adam··on Everything must be paid for twice
This is an interesting perspective but it only applies in cases where the use case doesn't already exist. For example, shoes are exempt. Another example I like is wood working tools. I need to cut wood in a certain way; buying a miter saw (while requiring a bit of setup and on boarding) has a net negative "second price" given I'm already committed to replacing every baseboard in my house.

But I like the author's perspective, so I agree that we should at least consider the second price and prioritize purchase of items for which it is negative.

_Adam··on How to design a house to last 1000 years
With proper ventilation this isn't an issue. My kitchen is centrally located, so I installed a range hood made by a Chinese company (Fotile, approximately $1300 on Amazon). It works exceptionally well. Even the smokiest/smelliest cooking odors don't escape.
_Adam··on How to design a house to last 1000 years
If wood stays dry it will last for centuries. Of course given the climate here you'll need to maintain and eventually re-shingle your roof (In the same region and my 34 year old tar shingle roof sprung a leak a few days ago) but if you do that your house will likely last just as long as your coworker's.
_Adam··on Open-Source Plastic Scanner
This is pretty cool. It looks like the cost of LEDs is by far the largest blocker to scaling this or making it a consumer product (if that's even intended). I suspect it's because they're esoteric frequencies are high precision. Is this precision needed to discriminate between different plastics or does it just increase the accuracy of a match?
_Adam··on White Collar Holler – Stan Rogers
If you also felt sad after listening to this, I recommend "Dear Old Stan" by The Dreadnoughts. It's a nice homage.
_Adam··on Japan breaks world record for fastest internet speed
I had the same issue ("1000/35" with Xfinity but in reality it was barely 10/1) but keep checking because CenturyLink is regularly bringing fiber to new areas. For the same price I can get 1000/1000 symmetric now.
_Adam··on Spherical Gear [video]
This is super cool and the video explanation is very intuitive. Robotic manipulators seems like the obvious application; I wonder how the torque transmission compares to a more traditional arm design.
_Adam··on 'Negative intensification bias' and unintended meaning
The article would be way more helpful with examples. What's an email that sounds "negative" but isn't?
_Adam··on First US Census Bureau Report on Growing Childless Older Adult Population
Those are all tractable problems. I don't mean overall, but the impact of all of those things on you is something you can control.

It's possible that society has imposed ridiculously stringent "requirements" for raising children (apparently families are buying a second washing machine just for their baby's clothes) that raising children responsibly is viewed as financially unachievable for most.

_Adam··on What to expect after the eviction moratorium
Depends on the property. The article specifically refers to low-income tenants presumably renting low-cost housing. The security deposit is 2mo rent and you don't need to chase them for it.

Probably not too many slumlords on HN, as evidenced by sibling comments.

_Adam··on Apple employees say the company is cracking down on remote work
The title is accurate, but misleading.

"Employees are now discussing how best to respond, whether it be through another letter or legal action. About 10 people plan to resign or know others who will resign due to the hybrid policy, the report said"

Ten is more than one, but the article makes it sound like an exodus is impending.

_Adam··on Nikon Is ending 70 years of camera production in Japan
Do you have a link? Most likely that $2 lens only works well at a single frequency.
_Adam··on A Hierarchy of Engineering Values
"When you build it" is missing from this list. In my experience, the "when" often tends to take precedence over the "how" and occasionally over the "what" as well.
_Adam··on Hyundai's Elevate robotic walking car steps out of the shadows
>Developed in a partnership between Hyundai's CRADLE disruptive innovations incubator and Detroit product innovation studio Sundberg-Ferar

That's an odd partnership. I'd expect they'd want to partner with a robotics company like Boston Dynamics.

>The concept has been in the works for well over two years

And all they have to show for it is a video? The article makes it sound like this is really happening but this is a very hard problem and they have nothing to show they've made any progress at all. Smells like marketing BS.

_Adam··on Compromised supply chain within a supply chain poses new risks
The hash comes from the source of the package, and in this attack that source was compromised. The malicious code was signed.
_Adam··on Amazon Echo Spot
You can now, multi room audio sync was added recently. I have two Echo's and I can say "play classical music [everywhere|office|living room]"
_Adam··on Reaction Engines begins construction of UK rocket engine test facility
I recall seeing this technology in Popular Science many years ago. It's a great idea but they have yet to demonstrate a full scale prototype.

There's probably a lot of technical hurdles just to making a whole new type of engine. But they also need to design and build a new space plane. That's a brand new supersonic airframe.

There's a lot of engineering needed here. I hope we can see some indication of progress soon.

_Adam··on Wikipedia blocked in Turkey
It's also destabilizing. Look at Libya, Iraq, 1970s Iran, etc.

Ukraine is the only example where an autocrat was removed from power without the entire country falling into chaos. They were fortunate to lose control over just Crimea and the eastern zone.

_Adam··on Wikipedia blocked in Turkey
Well, for starters they didn't decide for themselves. It was decided for them: https://www.nytimes.com/2017/04/18/world/europe/turkey-refer...

The greater issue though, is that it seems the "majority" is now imposing their religious ideals on a "minority". That is an unacceptable violation of the basic right to religious freedom.

Sadly Turkey is far from the first country in the Middle East to do this. There's a guy in Saudi Arabia on death row because he admitted to being atheist on his blog / social media.

_Adam··on A critique of trends in tech
Which model did you get?
_Adam··on An artificial womb successfully grew baby sheep
I'm doubtful about this. There's no neural connection between mother and child, and I find it hard to believe there's some alternative communication mode with enough bandwidth to teach behaviours.

The fetus may be listening to the outside environment or hearing his or her mother talk, but if this was a prerequisite to the "specialness" of humans/primates you are referring to, then we would see significant differences in the immediate post-natal behaviour of congenitally deaf children. I haven't searched the literature for this topic, but I personally have never seen that mentioned.

An easier explanation is that these are genetically encoded. The ducks are a good example. Ducks hatched from eggs that are artificially incubated seem to have the same core instincts as those hatched from natural incubation.

That said, there are still important forms of communication between mother and child: chemicals. An extreme example is the disastrous and tragic affect of alcohol on fetal development.

_Adam··on How to Avoid Going to Jail Under 18 U.S.C. For Lying to Government Agents
Today qualifies as some day ;) I'd be quite interested in hearing your story if you're willing to share!
_Adam··on Want to rescue rural America? Bust monopolies
>Amazon is a infested with scam storefronts.

Evidence?

_Adam··on The stupidity of crowds
Same. Couldn't close on mobile, showed up even after re-entering the site.

I don't know if there's data showing those popups work, but they really ruin the user experience.

_Adam··on John Deere has turned itself into a poster-child for the DMCA
And as a result, now we switches running Linux!

https://cumulusnetworks.com/products/cumulus-linux/

_Adam··on John Deere has turned itself into a poster-child for the DMCA
This isn't anything enterprise software companies haven't been doing for decades. John Deere just didn't set expectations. If there's enough demand for an open alternative, that's a business opportunity.

Personally I think it's stupid. Release the code under GPL and you'll save yourself a PR nightmare and future proof the company. Manufacturing and design of farm equipment is what keeps competition out, not software.

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