hasmanean

7 ms·

31.
by hasmanean 3y ago
They brought a plastic case to a machined metal fight.
32.
by hasmanean 3y ago
HW is hw and sw is SW…and never the twain shall meet. Hardware problems are low dimensional ones…”optimize this variable (usually clock speed), make this block functionally correct.” Software problems are high dimensional ones, especially t
33.
by hasmanean 3y ago
So the breakthrough happened when Apple shrunk the computer into a phone, not when Nokia grew the phone…? Interesting. I remember writing apps for the iPhone and the biggest hurdle to getting it submitted was sizing the screens for the disp
34.
by hasmanean 3y ago
There was also conventional wisdom which had to be abandoned before the iPhone came out. Nokia phones had 1 week battery life. They were extending it to one month. The iPhone had a < 1 day battery life. Ultimately consumers decided that
35.
by hasmanean 3y ago
Well a founder can make decades long bets. Any other company would have had an annual review of progress or a review any time mid-level leadership changed hands. Assuming a 50/50 chance of survival each time, the odds of the project la
36.
by hasmanean 3y ago
Compute unified device architecture ?
37.
by hasmanean 3y ago
I sometimes think about how good software quality would be if we all wrote test cases in the morning and coded in the afternoon. Motorola used to have a processes something like this…write and review tests at the same time as requirements a
38.
by hasmanean 3y ago
“Those who work with their minds must rest with their hands.” Japanese woodworkers would spend the first half of the day sharpening their tools. The secret of Japanese woodworking is the steel they used…and their insistence on air dried str
39.
by hasmanean 3y ago
Yeah nobody hears 16khz sine waves. But those high frequencies also make low frequency transients (eg square edges)sharper, and reduce ringing.
40.
by hasmanean 3y ago
Chuck Norris does not use an assembler. He live codes machine language directly into DRAM. He deal with security threats at the source, by tracking down the hacker and kicking them in the head.
41.
by hasmanean 3y ago
Or there is only one game…a metaverse in which you create a new game by customizing the world through ai generated content and rules. Fantasy below, Star Wars above—in a galaxy far far away.
42.
by hasmanean 3y ago
They do art. It’s just published on YouTube. Seriously the quality of diy videos and everything is sometimes PBS or BBC quality or better.
43.
by hasmanean 3y ago
Because if you have a natural gas flame in air (lets say 2000C, my previous number was wrong as someone pointed out), then you can do useful work with it. A carnot heat engine with a hot side of 2000C(Th=2273K) and a cold side of 200C(Tc=47
44.
by hasmanean 3y ago
6) heated and cooled beds make sense for 8 hours a night.
45.
by hasmanean 3y ago
A headache how? Because of noise or too much heat up above you?
46.
by hasmanean 3y ago
A heat pump that is used on the exhaust of a low efficiency furnace might turn it into a high efficiency furnace. This would have other benefits because you would not have to throw away an old furnace for no reason. ANY inefficient technolo
47.
by hasmanean 3y ago
Another approach is to heat the interior walls and ceiling instead of heating the air. Neglecting clothes for a few minutes, your body both radiates heat and absorbs it. When you are in thermal equilibrium you feel warm. If your walls and r
48.
by hasmanean 3y ago
Could that have been solved by placing a tarp over the unit beforehand?
49.
by hasmanean 3y ago
LBNL had a solid state thermoacoustic resonator the size of a coin, which I read about but never saw it in the market. It was supposed to be able to extract heat from anywhere.
50.
by hasmanean 3y ago
That sentence is not aimed at the consumer, but is a very efficient mechanism for capturing government subsidies.
51.
by hasmanean 3y ago
In theory burning high grade fuel to produce heat is stupid. CHP (combined heat and power) systems have more than 90% efficiency even with yesterday’s technology because all the inefficiency is used to heat your house. The temperature of a
52.
by hasmanean 3y ago
Pascal pointer notation was so logical. Dereferencing a pointer was just a caret to the right of the variable. A double pointer was just two carets. And so on. There was a struct symmetry about the whole thing. C broke that, especially with
53.
by hasmanean 3y ago
Or the camera in the great pyramid…3 hours of opening a door, entering a tunnel only to find another door.
54.
by hasmanean 3y ago
Veritasium is much better than Shakespeare. If you dropped his videos 500 years ago it would have caused a minor revolution.
55.
by hasmanean 3y ago
This is a general problem. If you want to get a good answer to a certain class of problems (especially in the diy domain, and now even math problems), YouTube videos are the best. But you have to watch 20 minutes. This is not scalable.
56.
by hasmanean 3y ago
Half a ton cargo capacity? That’s like the weight of what, 2 fat people? A ton is 1000 lb, right?
57.
by hasmanean 3y ago
Well math is eternal. Maybe printf will be eternal. But no window library is universal and eternal. Perhaps we need eternal User interfaces and APIs to go along with them.
58.
by hasmanean 3y ago
Edit: preface by stating that I agree with you. Well I have a different approach. Sometimes I write and hack it to solve a particular problem. The code might be elegant or not, but if you understand the problem you can probably grok the cod
59.
by hasmanean 3y ago
Subtle difference. A parallel_for can have asynchronous threads. They can all divergen and run independent instructions (due to if statements etc) SIMT means multiple processors all executing the exact same instruction. One instruction deco
60.
by hasmanean 3y ago
Default signed/unsigned is not a platform convention but a compiler one. You can change it with a compiler switch, in the makefile.

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