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aj7

2,131 karma · joined December 7, 2015

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aj7··on Charlie Kirk killed at event in Utah
Just what was going through my head when I made the comment.
aj7··on 3D modeling with paper
This is ridiculous. I’ll tell you why. Here I quote:

“All parts in the assembled model must be made of paper. Each part must be a single, solid color. The parts must not use any printed textures or designs. The model must be represented as a simple polyhedron.”

Must. Must. Must. This is a game. Or an art school exercise.

Modeling is concerned only with attaining the necessary accuracy. Not conforming to a methodology.

aj7··on How to make metals from Martian dirt
I have a fairly generic reaction to this.

Make metals at the top of Everest. Then we’ll talk.

aj7··on Electric bill may be paying for big data centers' energy use
May be?
aj7··on The Decline of the U.S. Machine-Tool Industry and Prospects for Recovery (1994)
China, which has a good, but not dominating manufacturing sector, will have a run of leadership, especially when it masters EUV, airframes/avionics/propulsion, and then potentially leads at the beginning of post silicon. But the United States won’t always be led by morons, and China’s lead in basic manufacturing will be fleeting, since that will be completely automated, and plant location and management will become mainly a financial calculation. Our young people have no interest or memory of the good old days, and will rebuild the country without the militaristic arrogance of their predecessors. The rise of fascism in the U.S will be studied in college. At least I can hope.
aj7··on Librarians are dangerous
See my comment about 612.6 above.
aj7··on Librarians are dangerous
In the stacks of the Main Branch of the Brooklyn Public Library, if you went to 612.6, you saw that a librarian had direct view of that aisle from her desk. But she was often not at that desk, so timing was involved.
aj7··on How University Students Use Claude
I’m a physicist. I can align and maximize ANY laser. I don’t even think when doing this task. Long hours of struggle, 50 years ago. Without struggle there is nothing. You can bullshit your way in. But you will be ejected.
aj7··on The Decline of the U.S. Machine-Tool Industry and Prospects for Recovery (1994)
Yes. We have a low end industry, but China has the ability to kill it. Haas is already importing from China. And at their current list prices, their machines, with known problems, are not that competitive with imported products costing 30% more, but using higher tolerances and heavier components.
aj7··on The Decline of the U.S. Machine-Tool Industry and Prospects for Recovery (1994)
This only stops when China equalizes. The real shame is our country is not such a nice place to live, when we enter our phase as a less-advanced country. We always had brilliant immigrants and democratic ideals to keep the ball rolling. What now?
aj7··on The Decline of the U.S. Machine-Tool Industry and Prospects for Recovery (1994)
Yes, absolutely. Our skill is in design, management, and marketing, and distribution. Making stuff is today’s farming.
aj7··on The Decline of the U.S. Machine-Tool Industry and Prospects for Recovery (1994)
Correct.
aj7··on The Decline of the U.S. Machine-Tool Industry and Prospects for Recovery (1994)
The tariffs will kill our industry. That’s my prediction. They will raise the cost of our inputs significantly, reducing demand, and giving China breathing room to catch up.
aj7··on The Decline of the U.S. Machine-Tool Industry and Prospects for Recovery (1994)
Fascists need an enemy, an “other.” Your last sentence describes globalism. But 51% of the voters voted for something else, and you and your children will now lead your lives in “interesting times.”
aj7··on The Decline of the U.S. Machine-Tool Industry and Prospects for Recovery (1994)
Exactly.
aj7··on The Decline of the U.S. Machine-Tool Industry and Prospects for Recovery (1994)
At what wages? Come on, man. Do you know what the average wage is in China on an iPhone assembly line? The pressures on workers?
aj7··on The Decline of the U.S. Machine-Tool Industry and Prospects for Recovery (1994)
No one will hire the people you are describing. We had 3.5% unemployment, before Trump began destroying the world economy. People in most fast food restaurants are making $30k. In fact the “entry level workers” and “illegals” were relatively happy. It’s the middle class workers who vary between desperate and enraged, because $45-$65k does not approximate the expectations raised in their childhood. What I’m saying is vastly oversimplified, but you get my drift. There is tremendous housing shortage, due to government policies that surreptitiously favored rising prices for incumbent homeowners, and corporate speculators. Healthcare is apportioned according to education level. Food is remarkably expensive.
aj7··on The Decline of the U.S. Machine-Tool Industry and Prospects for Recovery (1994)
Nobody is concerned with any of that. A $15,000 Chinese mechanical engineer is just as productive as an American who expects $70,000 for his efforts. This repeats over and over, from the lowest level workers to the executives. It is destroying the lives of our non-elite workers, who in turn, voted for a mad man. It’s only going to get worse. The hunger for knowledge and development is much stronger outside the U.S. than inside.

Tariffs are going to put our high tech industries under enormous pressure. There are two reasons. It makes sense to import parts and lower tech components of everything we manufacture because our trading partners have developed an economic advantage in the production of those types of parts. If we make materials and those lower tech factors of production more expensive, we kill ourselves. It’s economic suicide. And high tech industries live by exporting. In equilibrium, the market outside the U.S. is much larger than the internal market. As we are to China and the rest of the world, as Germany, roughly, is to us, we will prosper only by exporting high tech, advanced design products. Everything we do has to cultivate that process.

aj7··on Reasoning models don't always say what they think
LLM’s are statistically great at inferring things? Pray tell me how often Google’s AI search paragraph, at the top, is correct or useful. Is that statistically great?
aj7··on The Wright brothers invented the airplane, right? Not if you're in Brazil
Brings to mind Feynman’s takedown of the Brazilian educational system in the 60’s.
aj7··on Laser-based device can scan almost any sample of gas and tell you what's in it
Yes. And a surgeon can remove your appendix in minutes too. A 777 can be landed in a crosswind, in minutes. Why a pass can be intercepted and run back for a touchdown in seconds! All of this easy. I’ve seen it on TV, even.
aj7··on Laser-based device can scan almost any sample of gas and tell you what's in it
One time at the laser show, the booth across from us had a methane analyzer.

You could tell when people farted.

aj7··on Laser-based device can scan almost any sample of gas and tell you what's in it
You could taste it.

But working on a good dog interface is the way to go.

aj7··on Laser-based device can scan almost any sample of gas and tell you what's in it
People can’t even tell how much cheap oil is in olive oil, let alone “extra virgin olive oil” vs. el cheapo olive oil. Take it from this old laser spectrocopist. When there’s 75 mirror mounts on a 4 foot by 8 foot table, with a Chinese graduate student handcuffed to the table to adjust them, it’s at least a decade away. When you can buy a frequency comb laser on Aliexpress, now we’re talking.
aj7··on A Scientific American bolt puzzle
No there is not that symmetry, because the helix is handed, and the result could depend on the rotation direction with respect to that handedness.
aj7··on A Scientific American bolt puzzle
Grow, of course. I mean, come on.
aj7··on A Scientific American bolt puzzle
Here is my guess. If you twiddle your thumbs in the screw-in direction, the heads move together at twice the rate that a head would move when screwed into a fixed thread. And in the screw-out direction, the heads would move apart at twice the rate of dissassembling a bolt from a fixed threaded hole.
aj7··on Uchū – Color palette for internet lovers
What do you do once you have that file?
aj7··on Uchū – Color scheme for internet lovers
Can I use this color scheme in Chrome?
aj7··on Everything about Google Translate crashing React (and other web apps)
I use Google translate all the time, and I definitely noticed you have to kick it to update.
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