briandw

11 ms·

181.
by briandw 2y ago
I love the new trains. Now if we could get them to lower the db of the horn. They blast at a minimum of 96 db. It's pointless and a big quality of life issue. https://communities.springernature.com/posts/train-horn
182.
by briandw 2y ago
Cases like Tom Perez should never happen. He was held for the murder of his father who was alive. They told him they had video of him dumping bloddy clothes and they knew where he had buried the body. They the said that they would kill his
183.
by briandw 2y ago
Of course Att et al oppose this. It “interferes” with their business by offering an alternative.
184.
by briandw 2y ago
This technique is highly suspect until there are many verifications. See "Why Most Published Research Findings Are False" https://journals.plos.org/plosmedicine/article?id=10.1371/jo... The improvement
185.
by briandw 2y ago
This will cover another 4 years of R&D. They have a very long way to go before the economics of their business make sense. They are pretty far from making money on a per ride basis. They'll have to show significant per ride profita
186.
by briandw 2y ago
I can only think of The Oregon Trail when reading about Dysentery.
187.
by briandw 2y ago
Imagine the number of amazing space telescopes that we are going to get! When it's cheep to launch a 10m diameter object into space, so many possibilites open up.
188.
by briandw 2y ago
Yeah sure, that's the promise in the future, it's a demo of an unreleased product. It's all about someday when they are done. It was pretty clear from the talk at the beginning that Optimus is years out from being for sale to
189.
by briandw 2y ago
Behind whom? You are most likely referring to Boston Dynamics based on the 10 year comment. Optimus doesn't do back flips, so sure it's 10 years behind on backflips. Boston Dynamics famously doesn't do AI for control, not sur
190.
by briandw 2y ago
They didn't say otherwise, they showed robots walking around and doing things, but never said anything about not having people controlling them. It was clear that there was a person that was talking on the other end if you listen to th
191.
by briandw 2y ago
Let's assume that the battery in the pager is replaced with half C4 half battery. AA battery weighs about 20-25g, so 12.5g C4 total. 12.5g of C4 has roughly 84,000J of energy. For comparison, a 62 grain 5.56 NATO round has about 1,700
192.
by briandw 2y ago
My 12 YO and I just built a fishing game using o1 preview. Prompt: "make a top down game in pyxel. the play has to pay off a debt to a cat by catching fish. the goal is for the player to catch the giant king fish. To catch the king fis
193.
by briandw 2y ago
If having a facial recognition system of your citizens is immoral, then maybe the Netherlands government shouldn't have one either? Are the facial recognition systems of the Netherlands auditable? How can anyone be certain that they ar
194.
by briandw 2y ago
I can absolutely see myself falling into that same trap. Thinking that it's just a misunderstanding and that it'll get resolved any day now, just have to do one more thing. They can't be that unreasonable right? The unfortuna
195.
by briandw 2y ago
I know that it's an extra expense, but shouldn't you get a lawyer involved first thing?
196.
by briandw 2y ago
GATT is great if you want to make yet another heart rate monitor. I was building a lock that worked over BTLE and I spent most of my time trying to get around the problems with GATT. It's been 8 years now but I believe that that there
197.
by briandw 2y ago
Straw Comparison Stainless Steel Straw - Mass: 15g - Energy: 900 KJ per straw (60GJ per ton of stainless) - Composition: 18% Chromium (Cr) 8% Nickel (Ni) 74% Iron (Fe) - Note: High chromium content, which can be hazardous Plastic Str
198.
by briandw 2y ago
Ford and GM are not going to make the transition
199.
by briandw 2y ago
Cost to produce H2 from water, 50-55 kWh/kg Cost to liquefy H2 is 10-13 kWh/kg 1 Kg of H2 stores about 33 kWh of energy. More than 50% of the energy is wasted before transport, storage, boil off etc are concerned. H2 does not make
200.
by briandw 2y ago
I have to tell people not to use that secret handle when exiting my model 3. Damn the media hates Tesla
201.
by briandw 2y ago
SpaceX put up 1,238 tonnes in 2023. So let's say about 2000 tonnes globally. I don't know the Al fraction of a satellite, but assuming it's very high. Estimates are 15,000 to 220,000 tons of meteoritic material entering ear
202.
by briandw 2y ago
The early research in neural networks was hampered by proofs that perceptrons could never solve certain functions, like XOR. DNNs could have been developed much sooner otherwise. I view these proof papers with some skepticism, since they ca
203.
by briandw 2y ago
Think about what we could do with nuclear power if we had spent decades designing and building cheaper reactors. Small Modular Reactors out of a factory could solve the biggest problem of nuclear, that it's expensive and takes a long t
204.
by briandw 2y ago
Just read that xkcd, https://xkcd.com/1958/ . Same point, most people aren’t murderers.
205.
by briandw 2y ago
It’s good to know the limits AI systems. However this doesn’t mean that we shouldn’t develop self driving. Infrastructure is vulnerable, AI or no. You can attack the infrastructure, there is no counter other than a populous that mostly obey
206.
by briandw 2y ago
It's not a directed energy weapon like many of the SDI program ideas, but the US Navy got it's first live ballistic missile intercept recently. https://news.usni.org/2024/04/15/sm-3-ballistic-missil
207.
by briandw 2y ago
Mega-constellations also mean that access to space is getting cheeper. Bigger and more plentiful space telescopes should offset the loss from ground based astronomy in the long run. It's no consolation in the near term. But imagine the
208.
by briandw 2y ago
Sounds like they are using a [Buoyancy_engine]( https://en.wikipedia.org/wiki/Buoyancy_engine ). The large wings are there to provide efficient forward motion when going up or down the water column.
209.
by briandw 2y ago
I'm really excited to see something like Xr0 https://xr0.dev/learn get some traction. Feels like the best of both worlds. You a low-level language with optional safety guarantees. Especially for legacy code bases that
210.
by briandw 3y ago
Inconel is tough stuff, melting at around 1400°C. However looks like re-entry temps can range from 2,900°C to 6,650°C. I guess the question is if it's hot enough for long enough to melt a large lump. Apparently not in this case.

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