hristov

24 ms·

271.
by hristov 4y ago
Yes, it is the wheels that are beveled. However, the BART wheels are not beveled, they are flat (cylindrical) at the part where the cars usually ride. See https://www.reddit.com/r/bayarea/comments/2t7x49/
272.
by hristov 4y ago
The human brain is far faster at image processing than any computer you may be able to put in a car. So shortcuts are necessary. Perhaps one shortcut is to get actual reliable object shape and position data from Lidar than trying to infer i
273.
by hristov 4y ago
I think teslas tend to automatically choose 5 mph above the speed limit when you turn on autopilot.
274.
by hristov 4y ago
Cruise and Waymo have lidar. Lidar can give you much more certainty about detecting objects and distances. Teslas only use cameras and have to do complex image analysis to detect objects. On the other hand lidar is more expensive. But it is
275.
by hristov 4y ago
No it was not. If you get a green light without a green left arrow this means that you can turn left only if you yield to on coming traffic. This is a pretty basic traffic rule. The tram had a green light. The tesla had a green light but it
276.
by hristov 4y ago
R600a has been specifically designed to have a low global warming potential. Unfortunately this is not true for most refrigerants used today, most of them have global warming potentials in the thousands. R600a is still flammable so it shoul
277.
by hristov 4y ago
This is the popular libertarian opinion and it is half thought out and wrong, like most libertarian opinions. Say you are not an insider. Most investors in the public markets are not insiders. If a company wanted to be owned by insiders onl
278.
by hristov 4y ago
It is not officially known that the Saudi government provided support to the hijackers through Embassy officials and known agents. The currently accepted story is that the Saudi government has always tried to protect the US, has never been
279.
by hristov 4y ago
I downvoted you because doing one thing does not preclude doing the other. Using an electric car and solar panels is very good for the environment. You can also eat less/no meat in addition.
280.
by hristov 4y ago
Can any economists here (hopefully ones that have read the works of Mr. Minsky) opine on whether there are some more precise definitions of "Minsky moment"? Is there an objective way to determine whether this is a Minsky moment wi
281.
by hristov 4y ago
Actually higher inflation may help the poor and the middle class. If the inflation is caused by higher wages it is of great advantage of the poor and middle class. As well as a lot of the upper class (i.e., those of them that work for a liv
282.
by hristov 4y ago
Yesterday, I found it on the top of my front page. Then barely an hour later it disappeared from the front page and I could not even find it when I searched for it. Very suspicious.
283.
by hristov 4y ago
Wow. So much bullshit. Where do I start. Most importantly, the motion only bans gas appliances in new construction. Now think about this and re-read the article with this important fact in mind, and you will discover that nothing in the art
284.
by hristov 4y ago
Did hackernews just delete this story?
285.
by hristov 4y ago
The article did not say they would be using flourocarbons. They probably have not decided on what to use. So lets not judge them prematurely. Furthermore not all flourocarbons are toxic or environmentally dangerous. But most importantly, th
286.
by hristov 4y ago
One thing that should be mentioned is that a lot of 200 mm production is moving to 300 mm. On Semi are probably the poster child for this with their new 300 mm fab in Fishkill, new york (acquired from global foundries) intended to take over
287.
by hristov 4y ago
The great rasppberry pi shortage is probably caused by shortages of power electronics and networking chips.
288.
by hristov 4y ago
It is amazing how much incorrect analysis this global chip shortage has brought about. The situation with intel is complex but I will bring out the simplest error in this analysis. Chips are not like oil, or steel or wheat. A chip shortage
289.
by hristov 4y ago
Well it is mostly not worth the money. One of the biggest benefits of wide bandgap materials is the higher breakdown voltage. But that should not be an issue for logic circuits -- one should not ever reach the breakdown voltage. Another ben
290.
by hristov 4y ago
Pretty good article for the new york times non-technical audience. Power electronics is becoming and will become ever more important with everything around us getting electrified and silicon carbide and gallium nitride will become more impo
291.
by hristov 4y ago
This is the predictable result of increasing drug store consolidation.
292.
by hristov 4y ago
I am not talking about crypto in general but the ancor protocol in particular. The ancor protocol provided 19.5 % yield without having any asset that actually produces that kind of income. It provided the yield from new investments coming i
293.
by hristov 4y ago
That is not true. The supply of luna coins kept increasing, which means that new money was being pumped in without corresponding sellers. Furthermore, while on one side luna coins were being destroyed to support the tera peg on the other si
294.
by hristov 4y ago
It is a ponzi scheme. There is no production to provide for this 19.5% yield. It is all taken from incoming investments into the system. And it is well known that ponzi schemes collapse when the influx of new money starts becomes insufficie
295.
by hristov 4y ago
So can ordinary alcohol. And I would prefer the alcohol.
296.
by hristov 4y ago
I hate to point to my old posts and say I told you so but ... actually now that I am doing it, I am not hating it that much. Anyways, Elon did not have the money to buy Twitter, he had to sell a bunch of Tesla stock to do so, he tried to se
297.
by hristov 4y ago
I am glad. And it is not because of schadenfreude either. I believe that crypto has actually been a serious contributor to inflation through the use of electrical power for "mining" crypto. It is no coincidence that last year when
298.
by hristov 4y ago
You are correct. I am after all only an amateur railroader.
299.
by hristov 4y ago
That 7 P/E is not real. I took a quick look at yahoo finance and they showed a negative 740 Million tax provision in Q2 of last year and negative 135 Million in Q3 of last year. A negative tax provision means they actually showed profi
300.
by hristov 4y ago
Longer trains derail much much easier. For example consider the "straight lining" phenomenon. Straight lining is a major cause for derailments. The straight lining forces are pretty much proportional to the weight of the cars behi

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