kortex

19 ms·

481.
by kortex 3y ago
Honestly everything should do this. If it's saved in a password manager, it ensures you still have access to it, and if it's memory, it serves as a kind of spaced repetition to keep those neural pathways strengthened.
482.
by kortex 3y ago
A perfect example of when "cloud just means someone else's computers". It's literally a leaky abstraction.
483.
by kortex 3y ago
Depends a lot on the size, polymer, and even geometry (thread, shard, or just blob). Unlike metals, aliphatic plastics have little electronic interaction. My intuition as a chemist is most will just hang out in the lipid membrane or in vacu
484.
by kortex 3y ago
Engineered antibodies or possibly mRNA vaccine, maybe. Monoclonal antibodies would likely be too expensive for use as a purely ameliorative measure. But if we figure out how to fold proteins on demand, then we can express a sequence and mak
485.
by kortex 3y ago
Sure, you first, open up your skull for brain biopsy. Lab animals are kept in regulated conditions (illegal/unethical behavior under the radar aside), experiments are vetted by institutional review boards, and they live pretty decent l
486.
by kortex 3y ago
I think GP's point is that when you are interacting with Wendy's social media account, you aren't talking to Wendy herself, you are talking to Sheryl the Wendy's Media Associate. Hiding that actual interaction is uncanny
487.
by kortex 3y ago
We (the institution of programmers broadly speaking) tried that, and it was a hot mess. It's fine for scratch for a single machine, running a single version of the software. As soon as you involve multiple computers talking or multiple
488.
by kortex 3y ago
What's the test fixture for realistic vibration oscillations of the support struts or combustion instability as the rocket breaks the sound barrier? At some point, your in silico model needs real world data to validate it.
489.
by kortex 3y ago
Right. The criteria for this test was "Failure = CATO (catastrophic at takeoff)". It took off, it didn't CATO, it even hit max Q, therefore success. That's not "partial success". That's 100% success, you w
490.
by kortex 3y ago
> failed tests aren't failures, theyre learning opportunities I could frame this. Task failed successfully. Maybe folks need more experience in hard science (I'm a former bench chemist), but the only way a test can truly fail,
491.
by kortex 3y ago
"If you want peace, prepare for war" Sure our MIC has grown a bit fat on the teat, and the US government has done some very unpleasant things, but to totally boycott someone cause they work on weapons systems, I don't think i
492.
by kortex 3y ago
I could watch him just doing his thing for hours. He's the epitome of all the best things about an artisan/apprentice relationship: "Here's what you did wrong, I'm not mad, but if you continue to f&ck this up it
493.
by kortex 3y ago
You're not prototyping rockets correctly if you don't expect in the back of your mind some chance of bombastic events. They are the epitome of "engineer it to within an inch of its expected safety margins for the mission&quot
494.
by kortex 3y ago
I don't need to know the internal - it's pretty obvious. When you are test launching a rocket, MaxQ is the moment to test (aside from ignition, which you can test with static fire, so not really "test launching a rocket&quo
495.
by kortex 3y ago
Woof, that's a hole! Yeah I completely forgot "w", all the stage 0 stuff. There's only so much you can test with wet dress rehearsals, at some point you need to just launch a fully loaded rocket from it and see how it be
496.
by kortex 3y ago
By "Flight Termination System" I meant some automatic process, if such a system exists. It might just be a big red button at this point (since the goal is data collection). or maybe it's a very generous flight envelope, but t
497.
by kortex 3y ago
Initially posted this as a reply, but going top-level, cause the hot takes are too spicy for my liking. So the plan was to test x, y, and z. Launch sequence and takeoff, stage separation and Starship engine light, and the post-launch stuff
498.
by kortex 3y ago
I strongly suspect the range safety officer pulled the trigger. It did a bunch of unexpected tumbles, so I think if it were flight termination system, that would have popped it earlier. I don't think it came apart of its own account, t
499.
by kortex 3y ago
If you are planning on several y and z anyways, absolutely. On the most recent SmarterEveryDay video on encasing a Prince Rupert's drop in glass, sculptor Cal Breed talks about the moment when a process fails. He could stop there and r
500.
by kortex 3y ago
Yep. And they are trying to get Raptor 2 to less than $2M a pop (iirc). The "cattle not pets" of rocket science.
501.
by kortex 3y ago
The human brain is also three-dimensional, heavily interconnected, and has built-in thermal management at every scale. Chips are much faster, but still operate on the essentially linear memory cells, and this limits how many matmuls you can
502.
by kortex 3y ago
Classic "works on my machine". Operating systems are complex beasties. Bugs happen. I have an Asus laptop with Ubuntu 22.04 and it worked fine. Then one day, any time it comes back from sleep, the screen stays black. Can't fi
503.
by kortex 3y ago
Many people who would do this sort of thing likely already have an always-on pi (pi-hole, dns, ssh jump box, etc). And even at full bore, pi 4 is about 6.5W, so 90% savings over the HP. https://www.pidramble.com/wiki/be
504.
by kortex 3y ago
Even if it was hydrazine or UDMH, the half-life of molecules in the upper stratosphere is months/years, anything in the mesosphere isn't coming back down before photolysis breaks it down into NO2, CO2 and H2O. NO2 isn't great
505.
by kortex 3y ago
I mean, we've gone from stuck squarely on this rock to being able to escape our gravity well in a geological blink of an eye, so yeah, it's quite marvelous.
506.
by kortex 3y ago
Zero. That's not even in the true atmosphere at that point. The kerosene droplets will rapidly evaporate into free molecules and then diffuse around the mesosphere/thermosphere for months/years until radiation breaks it down
507.
by kortex 3y ago
> In parts of Eastern Europe, the World Health Organization reports, some swine herds have trichinosis infection rates above 50%, with correspondingly large numbers of human infections.[41] https://en.m.wikipedia.org/wiki
508.
by kortex 3y ago
Thank you, this is why I love HN! Ah, that makes sense! I thought neutrons were hard to store because they were neutral and go right through things, but I guess cold neutrons can be stored (at least until they decay into protons). Is it exp
509.
by kortex 3y ago
But how often are people using decimal types to do that? Most of the uses I could see this type being used for - currency, percent scaling, datetimes, audio/video codec frame rates - all are basically fixed point operations. Anything i
510.
by kortex 3y ago
Sorry, abuse of notation. 30.30 would be 30 bits numerator, 30 bits denominator. I would imagine it would not need to fully reduce after every operation, there's probably tricks where if you know the factors going in, there will be obv

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