skysight-inc/HackerNews huggingface dataset:
Hydrogen vehicles will never become popular. There are several reasons for this:

- To be carbon-neutral, the hydrogen must come from splitting water.[1] Currently hydrogen comes from steam reforming of methane (which releases lots of carbon).[2]

- Hydrogen is a very pernicious molecule. It will slowly leak through metal and weaken it.[3]

- Hydrogen vehicles must be refueled at special fueling stations. Electric vehicles can be charged anywhere there is electricity (such as at home).

- Hydrogen fuel cell vehicles are more expensive than battery electric vehicles. Toyota sells the Mirai for $57,500 and loses money on each one.

- Storage and transportation of hydrogen is very difficult. It must either be stored in gaseous form at very high pressure, or in liquid form at 20 degrees above absolute zero. Current vehicles use high pressure tanks, which also require high pressure pumps. Many hydrogen stations can only provide 5,000psi pumps, which means you'll only get half a tank (and half of your expected range).[4]

- Hydrogen is more flammable than gasoline (it will ignite in a much wider range of mixtures with oxygen).[5] Unlike gasoline, the flame is invisible in daytime. Unlike gasoline, hydrogen is invisible and has no smell, making leaks undetectable without special equipment. If an odorant is added to the hydrogen, it will likely damage the fuel cell.

- Hydrogen is more expensive than gasoline and far more expensive than electricity. Even with subsidies, refilling a Toyota Mirai costs over $80.[4] That gives you just over 300 miles of range. My Tesla Model 3 has the same range and a full charge costs me $6 at home. Supercharging is also cheaper, at around $25.

- Batteries got cheap faster than anyone predicted (except Tesla). In 2015, a study looked at past estimates of battery prices versus observed prices. They found that analysts were consistently pessimistic about cost reductions. Correcting for this, they noted that cost per kWh, "...could reach $200 by 2020." Actual cost in 2020 was $123.[6]

Given all of these disadvantages, I don't see how hydrogen vehicles could be considered reasonable. The economics, physics, safety, and convenience simply don't work out.

1. https://en.wikipedia.org/wiki/Water_splitting

2. https://en.wikipedia.org/wiki/Steam_reforming

3. https://en.wikipedia.org/wiki/Hydrogen_embrittlement

4. https://www.cars.com/articles/fill-er-up-refueling-the-2016-...

5. https://en.wikipedia.org/wiki/Hydrogen_safety

6. https://www.weforum.org/agenda/2015/04/will-falling-battery-...
Intuition says that people who have to choose between investing and other things aren't the maority of investors.

I'm think the economy will liven up a fair bit once people are out and about spending again, possibly even over-correcting.
right, the roots of the word make it applicable to lots of stuff, poly or many, morph or structure/form.
details?
Advantages over Beeper and this one?

Where are they all coming from suddenly? curious
When I was 5, my grandmother the edusoft programmer let me learn machine-code programming from one of her books.
My experience is that C programmers with many years of experience will still make off-by-one errors. Most of the examples have the correct bounds. The semicolons don’t belong but… so what?

If you wish to report errors to the author, there is an email address at the bottom:

> Please drop me email about bug(s) and/or suggestion(s):
> I always thought a headset is better than external mike…

It is, because users don't have to worry about mic technique or having a studio-quality room.
I want a return to the status-quo when for 80% (it could be even less but let's not dwell in the number) of the price of an Apple laptop I could get a windows/linux machine matching or surpassing its specs(including stuff like battery life,energy consumption, screen dpi, noise, etc). This is not true now and I am not seeing an option in the short term.
It’s also a term used in biology: https://en.wikipedia.org/wiki/Polymorphism#Biology
The problem is that if you assume case-usage in the design, then the whole thing about it being physically premium materials, smoothly rounded corners and such stops making sense -- you're going to shove it in rubber anyways. The only thing that matters then is the screen itself, and maybe the hardware buttons (eg volume controls)
You have to be very cautious with this approach. The intent is not that you are nominating a faceless member of a party to the office, but an individual that you hold personally accountable for their political actions.

Removing districts means that you are moving to statewide elections, and then it becomes a statewide office rather than a local office, which is not the intent.

The better solution is to make the scarce resource less so; limit districts to 60k people (i.e. pre-Reapportionment Act levels) and expand the house of representatives correspondingly. Then this problem mostly becomes moot.

The other problem, of having ~5000 people in the house of representatives, presents additional challenges, naturally, but the house has the power to set its rules so it can put more work on committees (which can have additional specialization levels) and less work on floors.
rqlite creator here.

I'm not sure I follow why it's a "big limitation"? Is it causing you long start-up times? I'm definitely interested in improving this, if it's an issue. What are you actually seeing?

Also, rqlite does do log truncation (as per Raft spec), so after a certain amount of log entries (8192 by default) node restarts work exactly like you suggested. The SQLite database is restored from a snapshot, and any remaining Raft Log entries are applied to the database.
One of the core reasons software projects run into problems is politics - and this article is about politics.

What should have happened ideally is that the blog post author would have said to the CTO:

- we're going with React

- you've chosen us to guide you in this

- you now need to trust that my advice on standards and approach is correct

- you need to get your developers to do it the way I say

- if you don't, then we will be building a frankenstein React project which is built like a .NET application

- the success of the project is at risk

And the CTO would have been wise enough to agree and pull his people into line and give the blog post author the authority to demand things be done as he says they should be done.

But that's politics and hard to do.
Indicating where you are on the page, and indicating that content can be scrolled. (I've seen webpages where there's content "below the fold" but where it's extremely easy to miss that depending on your screen size.)
I had to re-write the time based function from that extension in PL/PGSQL earlier in the week for someone on my team who couldn't work with the C extension:
https://gist.github.com/Tostino/ca104bff40e704b6db70b9af4926...

This can be used in RDS, etc.
I just got my M1 Air. This thing is unbelievably fluid and responsive. It doesn't matter what I do in the background. I can simultaneously run VMs, multiple emulators, compile code, and the UI is always a fluid 60 fps. Apps always open instantly. Webpages always render in a literal blink of an eye. This thing feels like magic. Nothing I do can make this computer skip a beat. Dropped frames are a thing of the past. The user interface of every Intel Mac I've used (yes, even the Mac Pro) feels slow and clunky in comparison.

Oh, and the chassis of this fanless system literally remains cool to the touch while doing all this.

The improvements in raw compute power alone do not account for the incredible fluidity of this thing. macOS on the M1 now feels every bit as snappy and responsive as iPadOS on the iPad. I've never used a PC (or Mac) that has ever felt anywhere near this responsive. I can only chalk that up to software and hardware integration.

Unless Apple's competitors can integrate the software and hardware to the same degree, I don't know how they'll get the same fluidity we see out of the M1. Microsoft really oughta take a look at developing their own PC CPUs, because they're probably the only player in the Windows space suited to integrate software and hardware to such a degree. Indeed, Microsoft is rumoured to be developing their own ARM-based CPUs for the Surface, so it just might happen [0]

[0] https://www.theverge.com/2020/12/18/22189450/microsoft-arm-p...
Motu M2 works like a charm.
> now that we have mouse wheels?

* Horizontal scrolling

* Scrolling when using pen/touch input on non-touch UIs

* Making it obvious that a content area is scrollable

* Providing context into how much content is visible vs. hidden, and where you are in the document

* Making it easy to scroll to a precise location without sitting there twiddling the wheel for minutes to go through something long

> My view is that content is king and any UI element that needlessly takes away space from the content needs to be destroyed.

Your view makes sense at 640x480. Maybe on a mobile screen. On a widescreen computer display, there's plenty of space for elegant UI controls.
WPF controls are still system provided/standardized "common" controls, though. Up until recently (.NET Core 3) all WPF releases were still Windows releases.

The issue isn't necessarily caused by the controls themselves or even the theming engine baked into WPF. Had Microsoft prioritized it, WPF might have had stronger system theming/retheming out of the box. It could have provided stronger design themes and more user choice in adopting theme. There's a brief window in the Zune development life cycle where they almost delivered exactly such a thing for WPF. IIRC there were 3 or 4 prominent Zune themes and easy style sheet swaps (including on the fly) to switch between them in WPF and those base stylesheets were almost productionized and included in the system WPF resources. (Then of course we all know what happened to the Zune and things moved to other platforms.) They still likely would have been opt-in because Microsoft prioritizes backwards compatibility, but they were a glimpse to the timeline where Microsoft had maybe done that sort of design work further ahead of time and forced it to be opt-out by default. (Admittedly which they tried and failed to with Windows 8 because developers complained too much that the opt-out was too hard and we'd already lost the war for "native controls/native themes" by that point to corporate/enterprise designers and branding efforts.)

Of course the "two worlds" problem of having multiple "competing" systems controls between the classic Win32 world and the WPF/XAML world is unlikely to ever be solved, given backwards compatibility assurances, but having "two worlds" shouldn't have stopped Microsoft from a single unified theming engine had they the initiative/prioritization. There's even hints that some people at Microsoft were considering it back before WPF was launched. WPF was always a partial shell of the "Avalon" dream of Longhorn's tumultuous development.
Yeah, I'm surprised Paypal has fallen so much. They were a pioneer in online payments, they used to offer Patreon-style subscriptions that could be integrated on any website, they'd automatically transfer the monthly fee to your account, but damn the interface was extremely confusing and buggy, I wonder if it got any better...
> the new technology’s way of doing things

what I find, with virtually every "new technology" that's come out in the past 20 years is that the "way of doing things" is not only completely undocumented, but also not agreed on by any two people. I can't remember the last time I found technical documentation that even bothered to describe what problem the technology was actually designed to solve in the first place - or was even written by somebody who seemed to understand why that would be important.
Could you use this to build a decentralized p2p app? If so, what gotchas and limitations are there?
There is explanation - both in this thread and in Amazons response to lawsuit which is public.

You don't care about fairness, you are just trying to convince people that there was inconsistency - by ignoring massive differences between how the two platforms operated. Parler was acting differently then Twitter.
I'm not sure when the last time you've used a Linux desktop is, but today that is mostly not the case. The third party app ecosystem is relatively strong today on Linux, with multiple implementations of Spotify, Discord and other "must have" apps. Since many of them are simply wrapped in Electron and shipped out to the end user, theming these apps are a cinch. If user empowerment is the topic of conversation, you shouldn't be ushering users to replace their systems with Macs "as soon as {they} have the money."
Also googling questions, troubleshooting skills in general goes far whatever environment anyone is put into
The Michael Scott Theory of Social Class
> If anything, the entire team seemed to do far more due diligence in decision making than pretty much 90% of the move-fast and break things (TM) SV startups.

Right, but this still isn't the fault of React.
My gripe with this article, and view points like this, is that instead of taking ownership it's again the tool that gets blame and just further perpetuates the "js bad" meme.

> And I'm not entirely convinced that it is a good tradeoff in the crazy JS ecosystem where everything is changing and breaking all the time, especially if you are building more complex things.

Right, and if that's your opinion (and a perfectly valid one!) then don't pick the JS ecosystem and cry when it bites you.
Looking at my 2 T. hermanni tortoises I can really see their species having pushed themselves for the past 100 million years.

Sarcasm aside, what they're really doing when the sun is out in summer: Lying in the sunlight, eating, walking, eating, hiding under a bush, hiding under piece of wood, bathing, etc all the way until they're 80. Quite peaceful animals.

What matters not that you constantly push yourself... it's well-being and that you are in personal equilibrium. Anything else is probably gonna end in a crash some time.
Well up until the last few years there were hardly

Then why was the peak year for sales in 2013?

https://afdc.energy.gov/data/10301

Consistently absent was anything on the higher end but now BMW, Lexus, and others, have a good selection that should fit under the hybrid banner

The Lexus RX debuted as a hybrid in 2005.

https://en.wikipedia.org/wiki/Lexus_RX
Maybe he could just stick to releasing them on his own land?

> In 2018/2019 it was reported that Povlsen owns 221,000 acres (890 km2; 345 sq mi) of land in Scotland, making him the largest landowner there.
I just think it's a bad idea to treat contractors and employees differently. It's crazy to have someone happily doing X hours of work, wishing they could do X+10 hours of work per week, and their boss also wishes they could do X+10 hours of work per week, but then the position would have to be paid more and they don't have the money. It's just cruel to take someone working a minimum wage job, which sucks enough already, and then make them get TWO minimum wage jobs, two bosses, two schedules to work around, all because they can get a contractor job but not a full time job.

So if we say, if you employ someone at a normal 40 hour a week job, you have to provide them with benefit X. Then if you pay a contractor 20 hours a week you should have to provide them with something that's half the cost of benefit X. It just sucks to incentivize companies to hire two thousand 20-hour-a-week positions instead of one thousand 40-hour-a-week positions.
https://gist.github.com/Tostino/ca104bff40e704b6db70b9af4926...

Posted it to the repo as well.
I remember a certain recent debacle with Occulus and Facebook, I simply cannot trust Facebook anymore.
WMP plays anything the system has a codec for.
> With [...] folks like yourself and myself writing posts about this kind of stuff

Please could you link to some of the reverse engineering writing by you guys to which you're referring?
I only listen to podcasts while driving, so my "learning" time has been drastically reduced
This is a strange way to look at it. The assumption seems to be we want to keep the motor cheap but then connect it to a transmission and that is supposed to be cheaper then simply using a slightly better motor?

Pretty sure its isn't and that's why 99% of EV don't use them.
Its expensive because there is a market for the mid-range model, but to achieve midrange, one must top out at the high end.
I wouldn't dare call 2900lbs fat though.

My 1982 Honda Accord weighed 2100lbs. Everything back then, before air bags, ABS, and other safety features, weighed considerably less. Honda CRX with a manual transmission weighed in at 1700lbs. So I stand by my statement, the DeLoren was chunky. :)
I find it fascinating that some of the same people who argued strongly that ISPs should not be regulated as common carriers and should be allowed to discriminate the traffic they serve now want to argue that certain services reached over those same ISPs should instead be treated as common property and regulated by the government.
> 1st, you're assuming people can charge at home - assuming they have a garage and access to power. This isn't true for a huge portion of the population.

So what, figuring out how people without a designated parking space can change their car is trivial compared to trying to undo global warming. Also Covid has shown us how much disruption we can actually tolerate, hint: a lot more than the powers that be want you to believe.
before going into lockdown I got the Rode NT usb mini:
https://www.bestbuy.com/site/rde-microphone-nt-usb-mini/6406...

I HIGHLY recommend getting a 10$ boom-arm from amazon and using that to get the microphone closer to your face. I have this setup and my coworkers say I sound like a radio host because the quality is so good.

All for 115$... single best investment I made in lockdown.
I just installed 20.04.1 on a 4750U Lenovo T14s and everything just works as far as I can tell.
Being able to click to go directly some porportion of the way through then fine tune, instead of having to scroll through all the intervening space.
It is! It's also a great way to learn how plant life works, it's more complicated than people think haha
This I'm not so sure about. It will certainly be different, but it's still an open question whether it will be easier to secure from a national security standpoint.

There's the physical security aspect of this, which is as you say, hard to take down when it's decentralized. However, as power generation gets more distributed, we'll naturally start seeing more (if not most) of these pieces of equipment be controlled over networks (private or public), and securing distributed infrastructure from a software standpoint is still a hard problem.

Just look at the state of IoT security today. It's quite bad, and that's not even realistically including nation state attackers in the threat model. I don't expect this to go well with a decentralized grid, at least not for a while initially.
I was part of the pilot [0], and enjoyed the process. It didn't cost anything, and they only requested random surveys on the service.

My extension just sets the default search engine to Runnaroo, and I don't promote it much because people can just do that through the browser, but it was nice to get some increased exposure and I did notice an uptick in downloads, especially initially.

In general, I'm all for Mozilla testing different monetization strategies to offset some of their reliance on Google.

[0] https://addons.mozilla.org/en-US/firefox/addon/runnaroo/
The city should focus on what makes the most sense for their citizens. In some places that means public transit, in some places it means EV chargers.
>Why should we care about the battles between corporate titans over how they treat each other?... the enemy of my enemy is my friend.

You should read a bit about the cold war in my opinion. This logic can burn you.
Touchless button that uses motion as feedback
Whenever the topic of of redistricting/gerrymandering or voting comes up, I always like to recommend CGP Gray's series of videos on the subject:
https://www.cgpgrey.com/politics-in-the-animal-kingdom

I think the "meta" issue of improving our political system is probably the most important political issue we should focus on for the long-term health of our society. Does anybody here have other good resources to recommend for learning about these issues, both from a theoretical standpoint as well as groups/organizations that are advocating for improvements in this area?
Thank you for the link to FP Castle! Their FAQ is a brilliant way to lighten up a Friday afternoon...
Scroolbars are useful for making large coarse leaps within a page in an instant, while scroll wheels are good for accurate positioning over short distances.

But please. just stop making everything flat ffs. On the GUIs of old, you knew straight away what you could interact with, while now, everything is so flat or hidden away that everything blends together, I have no idea what I can click on and what's static unless I used the app before.

Best example, compare Windows 95/2000/XP to 8/10.

Also, please stop with the auto-hiding bs. Sometimes I have to do a brute force sweep of the GUI with the cursor to trigger some elements to pop up from where they were hiding. WTF?! This would have made more sense 20-30 years ago when displays were running at 640x480 so real estate was precious, but now FullHD is the entry level norm.
I can’t figure out if this is parody or not.

In case it isn’t, scroll bars are for quickly figuring out the scope, for quick positioning and for remembering where in the article things are.
Given the choice of MobX vs Redux, I don't understand how a library with one ninth the number of downloads on NPM is the more "boring" one.
I had a similar setup using redis and zsets so this type of use case and implementation makes sense to me.
> I've spoken with (drunk to be honest?) recruiters that got a lower overall commission the higher the salary for the recruited person got.

Not to be an asshole, but that wouldn't suprise me. Maybe I got more cynical with age but anytime someone I don't know tries to tell me, implies, makes me feel that he/she is my friend and wants what's best for me, without a clear reason or incentive for it being so, I get real suspicious real fast.
> I do hope those little guys were able to resettle somewhere less prone to anthropogenic climate change ;)

Haha! That took me a minute. If that experience was anything to go by, spiders will be around long after humans have left.
The tips that parent poster gave hold true in teams working with any different tech.
>Spare time is becoming ever more precious these days.

I feel like this is something that everyone has been saying for decades and I don't really know what it means in practice. There are countless businesses that are successful soaking up excess time that people happily participate in. The mobile gaming business for example is an industry worth tens of billions of dollars that simply didn't exist a couple decades ago.

>The only viable path forward for EVs is to reduce recharge time or make it invisible (do it outside rush hour). Until then I see no way for them to displace hybrids as primary family cars.

Hybrid market share has likely already peaked and they never became the primary family car for Americans. Hybrid's share of new cars only ever topped 3% once and that was in 2013. Plus charge time has already been decreasing for EVs and Teslas have gotten to the point that an average American would probably only need to charge for 10-20 minutes once a week at one of their highest powered Superchargers. That really isn't the inconvenience that some people are making it out to be if there are other business at these charging locations that can keep people occupied.