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a9h74j

1,430 karma · joined December 7, 2019

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a9h74j··on Argdown: A simple syntax for complex argumentation
I haven't gone beyond reading the page, but the intent matches my intuition that we need tools for better following (and agreeing upon?) good "geometries" for arguments.
a9h74j··on Tell HN: Gmail's spam filters have gone bonkers
> randomly ending up in spam

If only we had some technology that could reliably execute if-then instructions.

(Recalling a time when people would say: "If only we had something [Google] that could look up an answer for that.")

a9h74j··on The Pretty Good House
I recommend a look at https://healthyhomebuilders.com/ and reading their book, in particular. They explicitly use closed-cell foam and appear to use ZIP-system outer sheathing. The methods they advocate seem in agreement with high-performance building, with extra attention to indoor health. They claim the latter can be done with reasonable extra cost. The book is very informative. I found it at the library when I went specifically to look for Pretty Good House.
a9h74j··on Remembering Intel’s Andrew Grove, who sounded alarm against offshoring (2016)
I somewhat recall he was warning working engineers, who had not yet learned to anticipate the inevitable, and were not, he felt, being given representation by the IEEE.
a9h74j··on TAB electronics books
My high school electronics teacher stayed in his office muttering "I know enough mathematics to be an engineer." ... while we dry-lab'd all our circuits at our benches.
a9h74j··on Friday night’s near-disaster at JFK airport
> and give them a nice loud master caution or warning if they're about to break their assignment.

Back in the days of the Exxon Valdez tanker incident, I wondered if the technology did not exist to positively track such major asset positions/directions, and dispatch an alarm from one or more authorities at a distance.

In terms of powering lights/signals, perhaps solar, batteries and a generator for each patch, and if there is no flashing of light visible (indicating power-loss or stuck-at failure), tower clearance must be given?

a9h74j··on Remembering Intel’s Andrew Grove, who sounded alarm against offshoring (2016)
FWIW, while in memory lane an obligatory shout-out to Irwin Feest, saying basically before the 1990s: If you outsource the manufacuting, the engineering will follow.
a9h74j··on ChatGPT Can't Kill Anything Worth Preserving
Is "being on the slopes toward a singularity" locally distinguishable from "pulling up the ladders behind you"?
a9h74j··on ChatGPT Can't Kill Anything Worth Preserving
And thus it begins.
a9h74j··on Analog Chess – pieces are not constrained to a grid
This seems to provide a quick overview of chess varients:

https://greenchess.net/variants.php

a9h74j··on Medieval Monks Were Distracted Too.
Lost manuscript: How to overcome procrastination and achieve higher daily LOT as a scribe.
a9h74j··on Sunken Greenhouse
Thanks!

> Originally developed in China to feed millions, Chinese greenhouses are earth-sheltered, solar-heated, east-west oriented, intelligently glazed, and well-insulated. They have proven highly effective in growing warm-weather vegetables and fruits like green peppers and tomatoes in cold climates through fall, winter, and early spring using passive solar energy as the sole heat source.

a9h74j··on Sunken Greenhouse
Aren't there many similar bermed (plus very-wide) greenhouses in China, including motorized deploument of insulated covers at night?
a9h74j··on Why are antennas popping up over the Salt Lake City foothills?
Pre cell phones, when wireless pagers were important, I used to wonder: What if everyone had their own 1-baud worth of spectrum.
a9h74j··on The expanding dark forest and generative AI
For different definitions of 'elevate'. For example, some will seek power, which will still be scarcer for others.
a9h74j··on Calculus they won't teach you [video]
Yea, recalling the book of that name might have contributed to my drift of recollection. Solvable earlier on land (but not sea) on terms of clock synchronization.
a9h74j··on French startup unveils new residential thermo-acoustic heat pump
I just found this[1] which mentions rubber vs. foam surrounds (suspensions), and butyl rubber with apparent good life. (That might have been the simple difference; the normal-looking speaker was already sourced; I came in to do embedded/DSP.) At kilowatt/constant power levels I'd imagine going as far as oil/magnetic suspension for high life; even o-rings under high cycles can fall apart.

I'm pondering how one would do accelerated reliability/life testing for the acoustic heat pump application. Maybe they have good-enough FEA/multiphysics on a suspension and cone, and strain/life curves they are prepared to trust. With a slope on log-log strain vs life they might project how much to overpower/overstrain for an e.g. 1000hr accelerated test.

[1] https://www.avforums.com/threads/speaker-life-expectancy.164...

a9h74j··on Kids and music lessons: why do many promising players quit early?
I once attended a workshop by a guy who had been a salesperson for Piano I, Piano II etc books. He noted that sales of those fell off geometrically for each successive book. So he basically advocated/hawked an improv and "fakebook first" approach, as a means to make enjoyment [potentially] primary.

I had an interesting night some years ago interacting with a Google piano ML available online. It would broadly mirror your input is a sort of call and response way. Even with only a qwerty keyboard (i.e. home row) and really elementary melody/stacatto it was remarkably pleasing. Relatedly, This could be one reason I anticipate great potential with GPT-like tutors.

a9h74j··on French startup unveils new residential thermo-acoustic heat pump
This and the posted article mention a speaker or driver. No mention of how they deal with aging or fatique effects in e.g. a flexible ring connecting to the frame and holding the cone. Have done applications where a special "high cycles" acoustic driver had to be sourced.
a9h74j··on Calculus they won't teach you [video]
> some perspective on our own biases/limitations

This is sometimes prescribed in such form as: "Fraction X of your reading should be of authors writing at least 100 years ago."

Similar: In defense of the reading of old books by C.S. Lewis ...

https://www.youtube.com/watch?v=jFHQDIE7CSw

"All contemporary writers [of any period] share, to some extent, the contemporary outlook."

a9h74j··on Calculus they won't teach you [video]
Darn, at some point I started imagining he had a protocol for synchronizing clocks over a distance. assuming the difference was in longitude. (E.g. Symmetric NTP over carrier pidgeon.)
a9h74j··on Sergey Brin: Irate Call from Steve Jobs
Perhaps "petty dictator" for connotations (a would-be not an absolute dictator). We might or might not have many too-distant impressions of what ancient feudalism involved. For example, I have heard suggested that it was a system fundamentally characterized by reciprocal obligations upward and downward (including a kind of labor law?). Abused no doubt, but not lawless.
a9h74j··on Optimal hydration may slow down the aging process in humans
> 2.5 liters is well within the safe range of water intake as far as I know

I have seen 2L/day of urine output recommended as a target minimum for preventing kidney stones.

a9h74j··on The Shameful Open Secret Behind Southwest’s Failure
> This is why we can’t just keep turning the operation of more and more of our infrastructure and our lives to antiquated software and self-interested executives. Technical debt is real debt. It will eventually be paid by someone. And unless we take steps to hold companies and executives accountable for preventable — and foreseeable — failures, it will be we the public that keep paying.
a9h74j··on Degenerate matter: How reality deals with uncertainty
One key word there, AFAIK, being representation.

To lower the abstraction level a bit: In tangible 1-D Schrodinger first-year QM terms: 1) All of the information about the state is in the wave function. 2) Per Fourier type limits, you cannot even represent in a wave function known position and known momentum past a limit on the multiplcative product of calculable "spreads" or uncertainties. (Smaller spread in position as implied in a wavefunction forces larger spread in momentum as calculated from the same.)

This can clarify that the limit is not because "measurement introduces disturbance". Rather, representation forces spread(s).

a9h74j··on Computer Professionals for Social Responsibility
> Risks Digest is still around

Been so long. Interesting the added attention toward AI, compared to e.g. real-time and high-reliability

a9h74j··on Ask HN: What's going on with Amazon Prime shipping times?
I wonder if WeChat as a portal facilitates direct-from-manufacturer sales. Is Amazon a contender in China?
a9h74j··on Ask HN: What's going on with Amazon Prime shipping times?
Same strategy. I find ordering at Aliexpress like buying at Costco -- always in more quantity than necessary.
a9h74j··on U.S. universities, rich in data, struggle to capture its value, study finds
One model: YT for persons without an adblocker.

Or: This lecture brought to you by Pepsi.

a9h74j··on U.S. universities, rich in data, struggle to capture its value, study finds
Make of it what you will, I just saw on the project censored website that protecting student data is seen by some as a major priority. The article seems more PII and cybersecurity focussed, rather than recognizing the threat of intentional monetization.

https://www.projectcensored.org/ferpa-and-higher-ed-should-p...

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