ggreer

7 ms·

91.
by ggreer 8mo ago
SpaceX has the most reliable orbital launch vehicle ever made. Falcon 9 block 5 has had 550 successful launches out of 551 attempts, giving it a 99.8% success rate. For comparison, Soyuz-2's success rate is 97%, Ariane 5 is 95.7%, and
92.
by ggreer 8mo ago
Intel built a bunch of chip fabs in Oregon, Arizona, Israel, and Ireland over the past couple decades.[1] TSMC has built a new fab in Arizona.[2] It's difficult to transport petroleum over the rocky mountains, and California requires i
93.
by ggreer 8mo ago
It's rare, but sometimes they do hit each other: https://www.reddit.com/r/SelfDrivingCars/comments/1mdl5zn/tw... https://www.reddit.com/r/waymo/comments/1pggtpu/t
94.
by ggreer 8mo ago
The NHTSA requires a report when any automated driving system hits any object at any speed, or if anything else hits the ADS vehicle resulting damage that is reasonably expected to exceed $1,000.[1] In practice, this means that everyone rep
95.
by ggreer 8mo ago
According to that article, Waymo crashes 2.3x more often than human drivers (every 98k miles vs 229k miles), which is clearly false. I think it's far more likely that humans don't report most minor collisions to insurance, and tha
96.
by ggreer 8mo ago
The "fire in a crowded theater" line is by Justice Oliver Wendell Holmes, Jr. in Schenck v United States.[1] During the first World War, he ruled that it was constitutional to send socialists to prison for distributing leaflets th
97.
by ggreer 8mo ago
> I'm not aware of any gun laws that have seriously effected the people who just want to shoot deer, because the tool you use to shoot an animal that isn't even aware you're there is pretty fundamentally different than tho
98.
by ggreer 8mo ago
California law prohibits anyone from 3D printing a firearm (or most firearm parts) without first getting a manufacturing license from the state[1]: > (b) A person, firm, or corporation shall not use a three-dimensional printer to manufac
99.
by ggreer 8mo ago
California has lots of restrictions on firearms. When I lived in the state, I had to get a firearm safety certificate (which involved paying some money and taking a multiple choice test), present my ID for a background check, get my thumb p
100.
by ggreer 9mo ago
It's unclear if this experiment actually happened the way Rosenhan claimed. A journalist went through Rosenhan's archives and tried to verify his story. She managed to track down one of the pseudopatients, who disputed some of Ros
101.
by ggreer 9mo ago
In addition to jamming the radio signals directly, Starlink terminals use GPS, so jamming GPS can hurt connectivity. Iran has been jamming GPS in an effort to reduce the effectiveness of foreign military attacks, but maybe they've step
102.
by ggreer 10mo ago
Also GM had to replace batteries in 142,000 Chevy Bolts & Volts due to fire risk, so I'm not sure that should count as an example of a successful use of non-cylindrical, non-LFP batteries.
103.
by ggreer 10mo ago
My point was about cylindrical cells with higher energy chemistries like NMC and NCA. Rivian uses cylindrical cells for their non-LFP batteries. Lucid uses 2170 cells. As far as I can tell, those three (Tesla, Rivian, Lucid) are the only US
104.
by ggreer 10mo ago
Since this is a discussion about electric vehicles, I thought it could go without saying that I was talking about batteries in such vehicles, not batteries in consumer electronics that are 1,000 times smaller. To use an analogy: If someone
105.
by ggreer 10mo ago
Which cell technology to use depends on the application. Tesla actually uses BYD blade batteries in some of their vehicles sold in Europe. The main issue with prismatic cells is that to be safe, they must be made with LFP chemistry, which h
106.
by ggreer 10mo ago
You are comparing a stock to a flow. Billionares in the US don't make $7 trillion per year. They accumulated that wealth over their lifetimes. If you want to compare apples to apples: The net worth of the US (as much as that concept ca
107.
by ggreer 11mo ago
I doubt there is any form of ABS filament with such a low glass transition temperature. As the original poster said, it was probably PLA. I find it odd that the report didn't name the manufacturer of the part, and that the part was not
108.
by ggreer 11mo ago
An 8,000lb van will be using fossil fuels and emit particulates from tire and brake dust. Unless it was incredibly efficient and electricity for the drones was coming from coal plants, the van would emit more pollution. But the biggest harm
109.
by ggreer 11mo ago
A truck travels a greater distance to deliver those 500 packages to the same locations, as it must take roads instead of flying in a straight line. And roads are much more likely to have people on them than a random patch of ground. Also th
110.
by ggreer 11mo ago
Consider that drones substitute for cars and trucks driving through neighborhoods. For the same payload delivered, ground vehicles cause significantly more property damage, environmental damage, and injuries/deaths.
111.
by ggreer 11mo ago
The post doesn't link to the report itself. It looks like you can only read a summary of it for free and must pay 5.90 to download a copy.[1] From what I can glean from reading TUV's summary, it seems like the Teslas had significa
112.
by ggreer 11mo ago
In addition to the increased rates of suicidal behavior and aggression in children (which we know lasts for at least 9 months, but don't know if it's longer because the study only ran for that long), the Wikipedia article talks ab
113.
by ggreer 11mo ago
Your pediatrician is either mistaken or lying. Children and adolescents who take SSRIs for major depressive disorder show increased rates of suicidal ideation, suicidal behavior, and hostility towards others. These effects persist for at le
114.
by ggreer 11mo ago
I believe Raptor 2 operates at a lower chamber pressure. According to Wikipedia, Raptor 3 is 350 bar, and its thrust to weight ratio is 183.6:1. BE-4's chamber pressure is low for its design, but it would be very difficult to increase
115.
by ggreer 11mo ago
The reset happens in the days following fertilization. Pretty much 100% of human DNA gets demethylated then.
116.
by ggreer 1y ago
Their main differentiator is cost. The Boring Company bid $48.7 million for the initial LVCC loop. The total cost to complete it was $53 million. The second cheapest bid was Doppelmeyer Cableliner, which would have built a people mover for
117.
by ggreer 1y ago
If we're counting in the past six months, the list should also include the Capital Jewish Museum shooting, the Boulder Molotov cocktail attack, and the shootings at ICE facilities in Alvarado & Dallas.
118.
by ggreer 1y ago
You said "And no Tesla has EVER driven without a driver with Tesla assuming liability for crashes." and I gave a counterexample. I figured you wouldn't count the Austin robotaxi rollout, since there is a safety monitor in tho
119.
by ggreer 1y ago
I doubt that. I moved around a lot as a kid, so I went to at least eight different public schools from Alabama to Washington. One school was structurally condemned while I attended it. Some places had bullying, and sometimes a couple of peo
120.
by ggreer 1y ago
I think the reason the school bought this silly software is because it's a dangerous school, and they're grasping at straws to try and fix the problem. The day after this false positive, a student was robbed.[1] Last month, a soft

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