skysight-inc/HackerNews huggingface dataset:
Gasoline is maybe 5 dollars a gallon and contains some 35kwh of energy. When burning gas in an engine we don't get 35kwh [1], but that is what is there.

Lets imagine we are building a gallon of gas with perfect efficiency. 35kwh is already about $3.15-10.50 depending on the market [2]. Lets assume however, we are willing to take the capital risk and invest in our own solar plant which gives us a price of $2.10-2.80. We can take this even further.

Lets say we buy our own panels, and don't even connect it to the grid. These panels are only used for this, and we only make gas during the day. Here we pay $1.2/watt of capacity [0]. Solar panels have a life of about 10 years. 8x265x10 -> 29.2Kwh/dollar if we use the energy from the panels entirely efficiently. This is about $1.2 on the absolute low end. Note that panels require some maintenance, and don't just die after 10 years.

Now that we have the energy, lets get our raw materials. Gasoline has a chemical formula of C8H18, a ratio by weight of 96:18 or 16:3. A Gallon of gas weighs about 6 pounds, meaning about 5 pounds of carbon to 1 pound of hydrogen.

Hydrogen is not cheap [4], Electrolysis costs some 2.4K USD per ton, 1.2 dollars a pound. Electrolysis is more than energy in, hydrogen out. It uses up electrodes for instance. If we are allowed to use fossil fuel derived hydrogen the price comes down to 0.2 dollars a pound [5].

Carbon is $35/ton, but this increases to $75/ton if we want beverage grade [6]. You could argue that we will need to purify the CO2 ourselves either way so we can use the cheaper carbon. Carbon to oxygen by weight is 12 : 30 or 2 : 5. So for 1 pound of carbon we need 3.5 pounds of CO2. This brings our cost to $122.5/ton or about 0.12 cents a pound.

Thus our material cost, including no synthesis is already in the ball park of $2 -> $12.9 per gallon.

We should also consider that gasoline has costs that our hypothetical fuel would also need. Additives make up 30-70 cents per gallon. Distribution another 30-60 cents a gallon. Taxes another 40-60 cents a gallon [7].

Adding these costs, our hypothetical fuel now costs $3 -> $14.8 per gallon. But we still need to actually add the costs for turning the ingredients into fuel. We also don't have any labor costs, or costs of capital.

[0] - https://a1solarstore.com/solar-panels/panasonic-solar-panels...
[1] - https://physics.stackexchange.com/questions/98966/maximum-th....
[2] - https://www.electricrate.com/electricity-rates-by-state/#:~:....
[3] - https://homeguide.com/costs/solar-panel-cost#:~:text=Residen....
[4] - https://oilprice.com/Energy/Energy-General/The-Green-Hydroge....
[5] - https://www.chemanalyst.com/Pricing-data/hydrogen-1165
[6] - http://www.dotyenergy.com/Economics/Econ_Physical_CO2_Market....
[7] https://voltaoil.com/what-makes-up-retail-price-for-gasoline....
I don't recall Tesla ever saying they were producing Optimus as a product any time soon. He's said prototype demo later this year. A prototype is very far from a finished product. As a product businesses/consumers can buy, at least 5+ years from now.
"Tesla has bet the company on robotaxis, but their vision only tech stack doesn’t seem capable of solving it"

Both clauses seem wrong.
One supposes that Stalin dreamt of sufficient firepower and prisons, not Twitter APIs.
"LCEVC hit the trifecta, delivering better quality than full-rez x265 in 30% of the encoding time with the same or better playback efficiency. LCEVC wasn't the only codec that made x265 look bad; AV1 pulled ahead even further in quality while the MainConcept HEVC FFmpeg plug-in also outperformed x265 by just under 20%."
Disclosure: I work for GM, this is solely my own opinion and experience.

There is a strong assumption that battery costs will come down, and raw material extraction will ramp up.

It is important to remember that we are currently extracting megatons of fossil fuels and just burning them to ash and carbon dioxide yearly.

There is also a strong assumption that batteries will be very recyclable in the future (recycling batteries will make economic sense)

Consider that a plug in hybrid needs two full propulsion systems. Both of those systems need to be engineered, tested, integrated, built, warrantee-ed, and serviced.

If battery prices do come down, the cost of the extra battery pack will soon be lower than the added cost of the ICE propulsion system.

It is my understanding that these factors led GM's leadership team to stop producing the Volt (plug in hybrid) system and transition to all EV.

If, however, battery prices stay high or go up for an extended period of time, this bet will look worse.

Fortunately for consumers, there is choice.
Just go the nestle route and don't put your name on 90% of your products.
I enjoyed seeing your other comment[s] in this mess of a thread. Good luck!
CRTC orders Rogers to give ‘comprehensive explanation’ for outage by July 22
You are correct. A Masked Language Model architecture would work very well here. Train it on labeled data and then bidirectionally infer missed spots.

That's fun. We should join their AI team.
He already left the core team [in January ](https://blog.rust-lang.org/2022/01/31/changes-in-the-core-te....)
Yes. I had to doom scroll all the way down to find the best comment
> that's money wasted

Just wait until you see how much is wasted in a 30 year loan. These decisions often comes down to life style.
It’s a scam when you’re taking people’s money for it and it doesn’t exist and keep extending the release date.
People are free to nitpick the purpose but I think it's pretty clear.

I also found the "licensed under the Anti-Capitalist license" pretty amusing, considering they are posting a project on GitHub--owned by Microsoft--and relying on US copyright law.
There is some shared Google docs in the dalle2 discord community about this too.
Which one is it? I'd love to compare.
The skytrain in Vancouver, Canada has 3 minute frequency at peak.
S'pore telco Circles.Life in talks for $3.5b merger with US-listed SPAC
Does it make sense that most of the US isn’t experiencing what Detroit is?
BentoML is definitely the best open-source ML tool I've ever worked with. Proud user!
Yes. If you are north of ~52.3° you won't experience 'true' night at the moment, just astronomical twilight. Of course the definitions are somewhat arbitrary.
Typically in cities the biggest constraint on bus frequency is bus congestion at bus stops (and to a lesser extent congestion in bus lanes), not number of buses. To the point where banning cash on buses can meaningfully increase system throughput, as it decreases lag time at bus stops. This can be alleviated with planning where people have to transfer to get anywhere (moving buses out of chokepoints) but in practice people don't like that.

Actually, I suspect this makes self-driving a particularly _bad_ solution for city buses; getting into the bus stops takes some manoeuvring, particularly when there are other buses there.

One place that self-driving buses could be interesting (and indeed there are already a couple of systems like this) is on fully/near-fully segregated lines, where they don't have to deal with human-operated traffic. Another would be small towns, but you're looking at full magic level 5 at that point.
I use my iPad for ear training and I can absolutely tell the difference between my DragonFly red and the Apple USB-C DAC. I'm just better with the DragonFly.

Don't get me started on the Bluetooth headsets. For music they are ok but there's really basic interval training that I score 100% on with the DAC and like 80% with Bluetooth. Consistently.
Like patentatt, I disagree with most of this. Which PHEVs are you looking at?

Some can blend power from electric and gas motors and give you the combined power output for modest durations almost any time--and then will use excess ICE capacity or regenerative breaking to recharge the battery.

Yes, of course you plug in any time you're home. Not an issue if you have off-street parking, any outlet works.

Transmission/clutch lag--which car have you driven? Does not exist at all in mine (GM Volt), have not heard anyone mention it in reviews of RAV4 Prime or other recent PHEVs.

It is in fact the best-case scenario for some driving profiles.

I have many modest-distance trips around town, and ~30 long drives a year, at least 10 of which would require a midway additional hour of charging in a BEV, with half the drive through an area that has no fast chargers and will not get any in the next 3 years.
Here’s an excerpt from Twitter’s 2014 annual report. I think they’ve been pretty clear for quite a while that there is subjectivity and judgment that goes into their estimates of monetized users that are bots.

“The numbers of active users and timeline views presented in this Annual Report on Form 10-K are based on internal company data. While these numbers are based on what we believe to be reasonable estimates for the applicable period of measurement, there are inherent challenges in measuring usage and user engagement across our large user base around the world. For example, there are a number of false or spam accounts in existence on our platform. We have performed an internal review of a sample of accounts and estimate that false or spam accounts represented less than 5% of our MAUs as of December 31, 2014. In making this determination, we applied significant judgment, so our estimation of false or spam accounts may not accurately represent the actual number of such accounts, and the actual number of false or spam accounts could be higher than we have estimated.”

The case isn’t a slam dunk only because public company merger agreements aren’t normally signed on a whim and/or for the lulz. Even here, where there’s a very clear specific performance obligation, Delaware chancellors normally don’t love enforcing specific performance (though they absolutely will, especially in the case of a buyer who’s obviously trying to avoid its contractual obligations based on a pretext).

The real tension here comes from the cap on damages, the chance that Musk blows up the committed debt financing, and the quantum of damages actually suffered by Twitter shareholders if the deal doesn’t close. Those are the actually interesting issues that will get hashed out in court - not some baseless claims about bots that could have and should have been diligenced by the buyer prior to signing a binding $44 billion acquisition agreement.
I think the 486/66 would probably have been ok for Windows 95, but the 4MB of ram would have been rough.
OK now, that's pretty cool. (Although Nest gives me chills, in any temperature.)

Thanks for links; some really good ideas. The PDF in particular has a lot more ways to reduce or shift demand; even a little can have a big change overall.
Hong Kong and Singapore do. It's quite nice, really.
Popular intracity buslines in bigger Dutch cities drove every 5-10 mins at peak times pre-COVID. It's really not that high of a standard.
> Rogers has said the outage was due to a network system failure after a maintenance outage and that the “vast majority” of customers are back online.

"Network system failure" could mean literally anything. I'd love a report from the chief technical person in charge of the strike team that handled this one.
Not every single word has to be read 100% literally every time you read it. It is a very powerful laptop. In the top .5% of laptops purchased in the year it was purchased, most likely. It does not have to literally be the most powerful laptop a person can buy. I think everyone reading that sentence understood that but you.
Most individuals have the majority of their stocks in tax advantaged accounts.
Thanks, such an honor.
I've put a lot of miles on my ModelY in Phoenix in the summer. Phoenix in the summer is not my idea of fun, but the screen (and the rest of the car) worked fine.
You either have no idea who travisbrown is or support this type of behavior. He literally harasses people he doesn’t agree with by defaming their character on any platform and/or forum that doesn't kick him out for breaking community guidelines and CoCs. I’m pretty liberal and think that fits a modern definition of harassment.
There is a lot of workaround when you are working with segments of 64kb addressable memory space.
Happens on windows as well
Oh that’s been going on for a while thanks to the tariffs and ban on European formula.
I've seen quite a lot of people use C# + winforms to do similar things, most "professional" devs kind of turn their noses up at winforms, but, you can bang out functional little apps without too much effort. I haven't tried with the latest .net 6 stuff, but I think you can pretty much compile the whole thing into a single executable now.
Mortgage Layoffs List 2022
There's no explicit delivery fee, but I find that most prices on Uber Eats are already inflated by ~10-20% over what you'd pay if you ordered directly from the restaurant.

The pricing model is very odd - you'd think that Uber would take all of their profit from the delivery fee - because, yaknow, that's the service that they're providing. But no, they also take a cut from the whole order afaik - which forces stores to inflate their prices to avoid eating into their normal profit margins.
How does TikTok search even work? I wish I had the patience to sift through all the garbage of an empty profile. Maybe I'll peak a Twitch stream of it some time to get a better idea.
I really like the “Mount Vesuvius emitting a column of smoke after its eruption on 8 August 1779" piece.
Money's killer app is that it can be exchanged for goods and services and is a standardized unit of exchange. Bitcoin can do that too, albeit slower, less secure against the risks most users face, and less throughput, but the problem Bitcoin has is that anything it can do fiat can do better. Or, if that's not quite true, the things that separate Bitcoin from fiat are trivial or make Bitcoin worse.

Bitcoin is basically a kind of musical chairs for money. People buy in and try to get out and maybe they make money and maybe they lose money. People will play this game, clearly, but that doesn't mean Bitcoin is the future of money anymore than casino chips are the future of money.
Does it let you receive real time notifications from other organisations, or do you only get them from the one you're 'active' in? That was the dumbest thing ever and caused me to constantly miss messages from clients (or my actual employer, if I was signed into the teams space for a client) until I got an email a few hours after someone had sent a message. I just don't get why they'd choose to artificially restrict it with such a deficient model.

Other things that sucked:

- search never seemed to find anything I wanted, and I never knew why, but I can always find what I want in e.g. Discord so pretty sure the problem isn't actually me

- copying and pasting code was always a nightmare with formatting

- if you called someone at the same time as they called you, who knows what could happen, it couldn't handle the multi-device nature of it all

- general latency, everything was slow and with a delay (which I think contributed to the issue just above)

- the file viewer sucked immensely, and never was improved

- resource use on Mac OS was often abysmal

- updates constantly caused further issues, to the point it became a joke with the team when we'd encounter new bugs

- delivery of message notification emails was inconsistent if not signed in at all. Sometimes it would be near instant, other times it would be hours later, and sometimes days later. Never had that issue with other services like Slack, so also don't think that was on our end.

- ghost calls, where teams would think someone was in a call, but it had been cancelled, causing misc. issues with calling back etc.

Damn, what a piece of junk!
I love my EV, but I'll be switching to a hybrid when the lease is up. EVs are great but charging is currently a pain. I have no doubt I'll switch back to an EV in a few years, but right now, they're not worth it to me.
A credit card hack for businesses
Love the picture of the CEO wearing a T-shirt saying 'banks are not your friends'.
I stand by that. The broad-based increase in costs is due to a supply crunch (war in Ukraine, lockdowns in China, disrupted supply chains) and a labor shortage. The cost of energy is up 42% year over year and of course that trickles down into all other categories. [1]

I think the pandemic relief was a contributor but not a major contributor. One that would have been irrelevant had Russia not invaded Ukraine.

Higher interest rates don't increase supply (6% APR doesn't get any new oil out of the ground) they destroy demand. By second order effects, they decrease the money supply and hence prices. But that's not exactly an ideal strategy as we'll soon see. The 2/10 curve has been inverted for a few weeks now.

This is a weak attempt at ad hominem.

After all, isn't oil up over 100% in BTC terms in the past year? Surely y'all didn't print a whole ton of BTC did you? Since you didn't how do you account for that spread? And the lack of evenness in cost increases - shouldn't monetary inflation have even, broad-based price increases? Why is energy up 10X more than other things? Used cars?

[1] https://www.bls.gov/cpi/
NodeODM
Looks like I misinterpreted your post.

The parent post mentioned "money printing coming home to roost. Lots of folks say that isn’t what it is." I too seem to have encountered people saying the money printing is a non-factor, and it's just supply chain problems. In reality, both are factors.
I kind of wonder what this means for our prospects of being able to make complicated products in the future. Presumably this will all settle out and we'll eventually settle back into a working supply chain that's maybe a little less centralized and with more redundancy. But that's not guaranteed.

In order to deal with climate change and maintain a decent quality of living, we need to replace a lot of ICE vehicles with electric replacements over the next decade or two. What happens if major manufacturers just can't make cars because the parts aren't available, and we're basically just stuck with the cars we already have for as long as we can keep them running? This has already happened to some extent thanks to Covid-19 and poor logistics planning, but it could be a lot longer and a lot worse if, say, China were to attempt to invade Taiwan or there's some new, unexpected catastrophe (natural or artificial).
At an individual bonds maturity I get the full principal back. How do I do that principal back from a bond fund if the value has dropped due to the macro environment?
I grew up in Marin and was a teen when the BART tax referendum occurred in the 1970s to extend BART into Marin. I remember the arguments against it (which carried the election):

"We don't want people from Richmond and Oakland being able to come into Marin!"

Well back then just like today, there is a distinct ethnic group this obviously refers to.

That was the primary argument against it - we don't want blacks in Marin (unless they are "house blacks" living in Marin City which used to 99% black in the 1970s - it's been gentrified a lot since then).

Even as a teen I knew exactly what they were really saying and I found it disgusting but it also made me aware of the fact that the most racist people are not Klansmen in white robes - it's progressive liberals and this was only my first experience with that. I've had plenty more since then over the decades.

Marin county is full of racists. It's a large part of why I'd never live there despite how I will partially inherit my mother's house there (it will be sold off instead). You can talk to black folks driving through Marin about how they get followed by the police and often get warned to get out of the county ASAP if they want to avoid trouble.

It's a large part of why I always lived on the east side of Silicon Valley (East SJ, Milpitas, Fremont, etc. where being "white" made me a minority) instead of the whiter west cities like PA, MV, SV, Cupertino, etc. You still hear to this day comments like I heard in Marin from people in these cities! We don't want "those people" from "over there" around here!

It's a large part of why I no longer live in California and have no intention of returning despite being a native born California with all my remaining family still in California.
Further, it seems religion may have developed as a part of the need to keep track of resources in ancient Sumeria. My impression is that the studies said something along the lines of by establishing a priest class wich survives on tithes but also function as clerks/scribes that society enters a new new level of economic development.
Subways in London, Tokyo and Moscow. Probably not on all lines though and maybe not at all times.
Am I the only one who thought this was another entry in the “absurd example to call attention to blockchain hype” genre?
The salt and then the acid metabolites narrows the kinds of things which can grow considerably. Lacto-fermenting bacteria are everywhere
Going home for a week at Christmas and backpacking/surfing for a week in the summer seems not at all unusual? That's why they can pay $30k stipends...
During peak hours, NYC has subways running every 2-5 minutes. It’s usually a 5-10 minute wait during the day otherwise (and it’s about a 20 minute wait off-hours).
It completely refuses to launch. Now I wouldn't be surprised if audio/video features may legitimately not be supported, but at least text messaging should work.
Snitching as a Service.
I’ve read that you aren’t supposed to use iCloud photos on a NAS (which is heck of a problem with the small SSD drives in MacBooks these days)
Vertical indoor farming is the paradigm shift we’ve been waiting for. Thanks in part to advances in LED lighting efficiency and cost.
Much more land and water efficient.
Do you wonder if the SWAT team ever needs to bulldoze your wall in (rightly or wrongly), whether they might get a warrant to disable your cloud-based security camera(s) just beforehand?
The driver isn't known when the order is sent in.

From https://thecollegeinvestor.com/20374/doordash-review/

> DoorDash is a food order delivery service. Customers place an order at one of dozens of restaurants, and then they agree to a delivery fee and tip. The app then pushes orders to “Dashers” who are logged into the app.

> Once you accept an order, you drive to the restaurant, place the order, bring the order back to your car and deliver it to the customer.
I don't know about this argument - Pizza delivery has been a common thing for decades and it seems to work just fine.
When a key person leaves, a lot of things can go haywire. If they take a break first, they can be semi-available to help resolve the most urgent issues. Kind of like turning off the circuit at the breaker to find out what is plugged into it.
Plug-in hybrids and EVs cost less to maintain and repair, finds Consumer Reports

https://www.greencarreports.com/news/1129728_plug-in-hybrids...
Linking an archived copy (and proactively making an archive submission when initially linking, which seems to be an increasingly common practice), would be preferable.
App dev here. We haven't seen an Android phone older than 2017 (so yeah, 5 years too). And we're catering for a poor country that doesn't change phones often.
It's depressing to see that chat (both textual and video) was a solved problem over a decade ago with single-core CPUs measured in hundreds of megahertz and low-hundreds of megabytes of RAM but nowadays despite orders of magnitude more resources it's apparently became an impossible problem.
Annually
You're right, I didn't know who he was. But I read some of his posts just now. He's clearly very angry (it's not healthy to be so angry), but I also don't see anything that meets a standard of defamation. He seems to have receipts for just about every potentially defamatory claim he makes, which presumably come from this big Twitter archive of his.
This is mostly what I believe to be the case, and as I argue here[0], it doesn't even make any sense.

[0]: https://news.ycombinator.com/item?id=31968482