namirez

6 ms·

31.
by namirez 3y ago
The case with gliders and U2 and the max L/D is due to the wing aspect ratio (look up the formula for drag polar). Modern aircraft have much higher L/D because they have long skinny wings and these wings are possible because we mo
32.
by namirez 3y ago
Not quite true! Modern airplanes are way more complex. First of all, all modern airplanes have supercritical airfoils which go back to the 60s and 70s. Secondly, the airfoil of the wing root is typically different than the wing tip. Finally
33.
by namirez 3y ago
I believe the main reason is that the skillset in this domain has a small overlap with what is needed at FAANG. This is done mostly in academia and as such the salaries are in line with the salaries at universities.
34.
by namirez 3y ago
I’m a bit apprehensive since I don’t know SW personally, but what my friend described sounded like a borderline abusive behavior. Basically he treated people like they were stupid and shouted at them when they made mistakes.
35.
by namirez 3y ago
I had a friend who worked there. A very smart Ivy League-educated math PhD. He was very critical of the work culture at Wolfram Research. Apparently in his experience Stephen Wolfram treated people badly.
36.
by namirez 3y ago
Because there is no other plane in the market other than Airbus 320 that is in the same class as 737. The only other manufacturer is Embraer with their 175 which is a much smaller aircraft.
37.
by namirez 3y ago
Sounds like an urban legend. Doesn’t make any sense.
38.
by namirez 3y ago
Except the metaphor is quite misleading. Aristotle believed: Force = velocity * resistance
39.
by namirez 3y ago
I don’t think Einstein could have come up with general relativity if he had to rely on any other language than math. So I suspect math is not “just” another language.
40.
by namirez 3y ago
Please pay more attention to the user names.
41.
by namirez 3y ago
Except water is H2O where the oxygen comes from plants and plants get it from water and the hydrogen comes from hydrocarbon fuels where the hydrogen comes from water again. So technically you can never create new water on Earth but you can
42.
by namirez 3y ago
Floating point operations per …?
43.
by namirez 3y ago
Effective because so few do it. It’s just not scalable.
44.
by namirez 3y ago
File a chargeback to your CC company. Don’t waste your time with Amazon reps after the first call. Chances are they’ll ban you from Amazon which makes it easier to transition to other services.
45.
by namirez 3y ago
Also the proper unit is kWh rather than kW.
46.
by namirez 3y ago
Because it’s an “or” rather than an “xor”.
47.
by namirez 3y ago
Parallel programming is not hard; state management is hard. And for problems that are not embarrassingly parallel, unfortunately there is no silver bullet.
48.
by namirez 3y ago
It wasn’t a complete failure. SpaceX will learn a lot from this launch. But I believe this design is not super reliable. Synchronizing 32 rocket engine is not easy. Perhaps this will be a great cargo ship. As for carrying astronauts to Mars
49.
by namirez 4y ago
Easy to look up! By current estimates Earth cooled enough to have liquid water about 4.46B years ago and the first RNA emerged around 4.35B years ago. So it took just over 100 million years for simple forms of life to emerge.
50.
by namirez 4y ago
Then you need to explain how life on Earth started a short period after it cooled down. Yes, it took a long time for complex life forms to emerge but life itself started right off the bat.
51.
by namirez 4y ago
Khomeini died in 1989 so I don’t think anyone actually lived there but the place had a symbolic significance to Islamic regime in Iran.
52.
by namirez 4y ago
Of course Lisp had recursion before Algol60.
53.
by namirez 4y ago
I know some people involved in Boom. They simply have no understanding of the physical limitations of supersonic flight. Surprise, they’re all software engineers.
54.
by namirez 4y ago
Good luck to them but it sounds like an expensive solution. I’d be super excited to see a scramjet startup but scramjet is always decades away like the fusion reactor.
55.
by namirez 4y ago
I don’t know much about their long term business strategy but what bothers me is that they’re vague about how they intend to achieve the flight mission objectives. This is very different than SpaceX which focused on reusable rockets and lan
56.
by namirez 4y ago
Sadly Boom is doomed and it’s been a writing on the wall all along. They never had a good engine option. The military engines are not safe enough and developing a new civilian engine makes sense only if you make hundreds of them. Their net-
57.
by namirez 4y ago
I was speaking with one the top managers of Airbus and asked him about Boom Supersonic and the Overture. He was skeptical of the idea mostly because of fuel consumption. He said based on their research, the future of flight is slower not fa
58.
by namirez 4y ago
Many years ago I used this as the textbook in a technical writing class: Booth, Colomb, and Williams, The craft of research, University of Chicago Press.
59.
by namirez 4y ago
The two big CAD kernels are Parasolid, owned by Siemens, and Acis, owned by Dassault. Both of them are proprietary, quite pricey, and light years ahead of OpenCascade in capability and stability. The current state of open-source CAD is very
60.
by namirez 5y ago
Yes, I thought about both possibilities (discrimination and insecurity) but I want to remain positive and not attribute ulterior motives to the interviewer. It was an ironic experience though because, I believe, had my code been a bit slowe

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