skysight-inc/HackerNews huggingface dataset:
Unfortunately, hydrogen is just fundamentally not as compelling. Fundamentally much less efficient (round-trip), volumetric energy density basically identical with state of the art batteries (which are improving), much more complexity, greater safety concerns (really high pressure plus the most flammable gas there is), material constraints... You still need a lithium battery. You cannot charge at home. The fueling infrastructure is more expensive than gasoline pumps or electric charging stations (and sometimes not even faster than Tesla's 250kW v3 charging... i.e. if you have two cars fueling, often the second car takes much longer as the station's buffer tank is emptied... to get the 5 minute fueling speeds, the hydrogen must be compressed to extremely high pressure... 5000psi... and cooled to cryogenic temperatures otherwise it will heat up the existing hydrogen gas inside the car's tank). The fuel is more expensive than gasoline.

In fact, a high end long range Model 3 has more range (322miles) than the Toyota Mirai (312mi) but costs less ($49k vs $59k). Is dramatically faster (4.4 seconds 0-60mph vs 9 seconds). Also has vastly greater number of charging stations (and can slow charge from any 120V outlet).

Fuel cells themselves are expensive. Estimates are about $11,000 or so for the Mirai fuel cell stack (not counting the secondary systems like the lithium battery or even the hydrogen tank), or about the same as what the 75kWh Tesla Model 3 Long Range's pack which has greater range. So fuel cell cars will be fundamentally more expensive up front, more expensive to run, more maintenance, with less convenient charging.

To me, a plug-in hybrid (even if using synthesized carbon-neutral hydrocarbon fuel) is much more compelling if you wanted a technological alternative to pure electric. You're not going to be stranded due to lack of charging infrastructure, can charge at home, don't require super high pressure tanks, can fuel fast, etc. At least they have that going with the plug-in version of the Prius.

But hydrogen just doesn't make sense for cars. Maybe on very large vehicles (ships, maybe airplanes) that can use liquid hydrogen (much denser than compressed hydrogen and doesn't require ultra-heavy high pressure tanks).
If the technique is solid, they should sell to big insurance companies. That are the actors that are interested in paying for the most efficient treatments. At least when it comes to choosing between short and efficient or long lasting.
If you are interested in creating a startup, you should first find something that can actually make money and then work on creating a great product around it.

Too many people come up with a great idea and then hope for the best when it comes to market fit and actually getting customers and achieving profitability.
I also would love to see more safe ways to ride bikes, but I don't see it happening anytime soon.

"Dump legistration" is the way it is as increasing the power and speed limits with inadequate infrastructure can significantly increase risk for pedestrians and bike riders, likely more than risk posed by cars.

Most places already have adequate infrastructure for cars to be safe enough.

Infrastructure changes such as adding more ebike only lanes need to come first, and this will cost a lot and even infeasible without first reducing the number of car lanes. This will result in conflict of interest between car owners and people who want to introduce such infrastructure changes.

Conflict of interest can only be resolved by politics, and it will take a long time for politics to work out as changing people's perception generally takes a long time.
> The founder didn't do any market research ... before quitting their job

That was the entire point of the article (written by the founder). What was the point of this comment?
> I was able to get out the door for $25k before taxes and ~$2k tax refund

MSRP on the 2020 bolt is $36,620. How were you were able to talk them down $10k on the price?
this article made me think of 2 experiences at big box stores I had this weekend.

At Lowe's, I had to buy a few things for a desk Im building. I noticed the following:
1) the staff size was the same, but
2) I had to check out my own items at the self checkout which is
3) user hostile and requires assistance for about 30% of the items.
4) they only had 1 person for 8 self checkout stations and this person was super busy and checking out took unnecessarily long

I vowed then to never go back. It just so happens I had a plumbing issue, so I went to home depot. As luck would have it, they have done the same thing. However, their self checkout was reasonably polished and more user friendly. That said, I still was not happy with the process and will revert to going to one of the fewer and fewer ACE hardware stores whenever possible. I shouldnt have to know any code or special information about a product to buy it. If I have to check out my own items I shouldnt see 15 employees loitering around the store chatting.(true at both Lowes and Home Depot). I shouldnt be paying 8 dollars for a 25 foot roll of painters tape if I am checking out my own items.
Not really. You still have the same issues normal bikes have; all ebikes do is give power assist and more or less fill the same niche a gas or electric moped does, for the same price as a gas or electric moped.

You still have no real cargo capacity, you can't transport passengers, you are exposed to the elements, and more. While the power assist is of considerable benefit, it puts the price of the bike up immensely; many are the prices of a used motorcycle or scooter.

I feel its much better to get a 4 cycle scooter or motorcycle for that; if i'm spending 3k plus on a bike, getting one that can actually do traffic or be on roads is a plus. Yes there is licensing, but ebikes will fall under your states moped laws anyways and may require having an actual drivers license instead of a motorcycle endorsement.
BCache: Awesome and Terrible at the Same Time
Amazon Accused of Threatening to Fire Climate Activists
The answer should be protected bike lanes and separated bike paths/trails. But, US cities generally have very few of those, preferring to skimp by just using strips of paint.

Hence the situation you end up with here: some go into the meager bike lanes, some feel more comfortable taking the lane, and some feel safer on protected walk lanes, aka sidewalks.
As long as DXVK allows people to replace shaders, EA has to treat DXVK like a cheat tool.

Replacing shaders is what people use to do shady things like wallhacks, outlining moving enemies, or providing targeting data for aimbots.
The Time of Giants
The communicated expectation was always 360k-400k. This was a range that “everyone” said was impossible to reach even at the low end.

A tweet issued after hours and corrected the same day does not change the range explicitly stated in every earnings call and quarterly statement Tesla issued throughout 2019.

It doesn’t matter what you or I think. The market speaks for itself. After announcing the number the stock is up ~3.5%. That indicates that reaching the lower range number was not fully priced in as of yesterday, and that the market deems this to be good news.

Also, the annualized run rate with GF3 producing 3k/week would exceed 10k/wk based on 100,000 cars produced in Fremont in 13 weeks in Q4. Getting GF3 to 3k/week less than one year after breaking ground was also something the pundits said was “impossible”.
You have no idea of how much a votekick system will get abused. Nobody would ever seriously consider such a system in 2020.

Teammates will kick you out for stealing kills from them. Teammates will leave bots on even if they are flagrant bots if they are helping the team. Enemies will kick you out if you are too good.
> RFID-Everything : Basically NO… not in consumer-land, at least

Contactless payment systems grew out of RFID, I would categorize that as a YES.
U.S. States by Population from 1790 to 2050 (History and Projection)
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You're assuming that ecommerce is universally a better experience than brick-and-mortar. Given the abysmal reliability of Amazon listings these days, I'm not ready to agree.
CSGO is absolutely a bigger game, and there's money in it but I don't think BF's smaller scale would hinder efficacy at all. It takes a tiny fraction of players to review suspicious actions and collectively remove players from the community. This scales pretty linearly with your player count. From dozens, to millions.

Doing nothing, or doing the wrong thing has atrocious effects on the community. Just read some of the other threads in this post. Seasoned players who wait weeks for flagrant cheaters to be removed. It kills a game quickly.

Maybe that's actually what EA wants.
Which is not legal in many states, unless they have 'probable cause' or you pay a membership and agree to it beforehand (c.f. Costco).
It seems like you stopped far too early pursuing your idea.
This is one of the best startup post-mortems I've read on HN. Clear and engaging writing which also provided key insights into the mind of the entrepreneur during his journey. It's sad that it didn't work out but I think it can help teach valuable lessons to anyone reading it.
Congratulations on learning the hardest lesson, your next startup is now a lot more likely to succeed, so get to work!

A lot of comments criticizing what the author already knows, that the business plan was incomplete. I had the urge to do the same, but read to the very end and realized TJC clearly learned the most important lesson, and it's one I've learned myself, so I have no room to be critical.

BTW, I burned a lot more than $40k and 9 months in my own story, so maybe it helps to hear that other people have made the same mistake and gotten too convinced their idea is valuable without checking carefully enough -- without quite knowing how to check carefully. I know what it feels like to know that I'm doing the right thing, and then find out that it's not good enough.

Fun read, and an important lesson that many very bright people will still learn the hard way, even after reading a story like this. Thank you for sharing.
The reason that you don't get a result for "best painkiller" when you google best painkiller is that there's no such thing.

Why are you in pain? have you had a lot to drink recently? What kind of painkillers do you usually respond to? Why not simply combine them? Are you going to keep track of all of these predicates for each query?

This guy's mistake was not that he mismanaged a company. His mistake was having a shitty idea and being utterly deluded about its value.
I've used Chromebooks for 8 years now. Anecdotally what I've noticed is that the sheer amount of bugs has increased dramatically after they started implementing the ability to use Android apps. Right around that time it seemed like Google went from trying to make the best browser based operating system to something else. With new updates things seem to spontaneously break and the amount of effort that went into tracking down bugs diminished.

I'm using a MBP now, instead, partly due to the quality issues and partly because Google's privacy stance has made me more uncomfortable as time goes on.
They find the game fun, I suppose. I still really love Fifa and will keep playing it
It’ll only grow as fast as the “1st world” keeps consuming and off-shoring to avoid regulation. So where’s their initiative?
Futuristic hotels for business travelers in China and Japan
Somewhat related to a recently shared post about software bloat: https://news.ycombinator.com/item?id=21929709
Because she can dress however she wants
My gas weed whacker stopped working properly last year. I decided to get a Ryobi battery-powered one rather than fix the gas one. It's not quite as powerful and I'll probably end up getting a second battery.

OTOH, there's no fussing, it's quieter, and I also got a brush cutter attachment which can handle some places I pretty much had to do manually before.
The stats you are quoting are only shoring up (half) the base of the article's argument. Aggressive, type-A men are more likely to large, daring risks whether that's committing crime or starting ground-breaking companies.
How do you create a homogeneous culture out of a heterogeneous one? It's been tried so many times and it has either failed or been judged an atrocity.

Some people want to keep their culture, so you can either force them to change, move them, kill them, or stay multicultural. To avoid being terrible you just have to let others be and trust them even though they are different.

I don't believe I'm exaggerating that cultural homogeneity is a really ugly idea with a terrible history and it is hard to make an argument for it on a national scale.
You aren't actually required to have your receipt checked. I just walk straight out and ignore them.
Because only certain discrimination - discrimination based on "protected class" - is illegal.

Banning people based on skin color? Illegal.

Banning people based on eye color? Likely legal in most states.

Note that the linked site mentions they only do it in some states, because it is illegal in the others.
If you aren't playing for money, why does anti-cheat matter?

Just use ELO matchmaking and/or play with friends.
The New New Weird
Seems to me the shift to "Matchmaking" style online multiplayer has caused a whole lot of problems that weren't that big a deal back in the "community server" days. I personally think one can blame the rampant toxicity of players on this removal of the community aspect.
I predict the broader ML/DL community will keep pumping out iterative papers that push the ball just a little bit forward while maintaining job security : Gatekeeping, no one thinking outside of the box, benchmark putting, just enough for the appearance of progress, and nothing broadly innovative or disruptive. The applications of ML/DL will continue to be gimmicky consumer products that have questionable valuable, questionable profit potential, add even more to disinformation/misinformation, produce more informational noise, only serve to rebuff a big corp's cloud offerings, and waste people's time. I predict tons more 'bought' articles that hype up AI technology for the typical 'household' names. I predict the same ol' echo chamber of thought and reinforcement of 'gatekept' ideology. I expect a number of more prominent articles critiquing the shortfalls of the technology. I expect a number of young minds steeped in DL/ML coming to the realization that it's not what they expected... That its a big profit/revenue story for Universities and established corporate platforms. I expect a number of them to realize ML/DL is truly not "AI" or anything close to it. That they aren't doing cutting edge research and that they are not allowed to think outside of the echo chamber of 'approved' approaches.

I predict more useless chatbots that utter unpredictable word salads. I expect more gimmicky entertainment focused uses of it. I expect more assistants being adopted for data collection. I expect more people who aren't busy or doing anything important, using assistance assistants and text-to-speech to speed up their tasks so they can waste more of their time on social media/youtube/entertainment. Samsung Neon is coming out in some days.. making use of that 'Viv' acquisition.

I expect more feverish attempts at attacking low hanging fruit jobs with overly complex solutions. I predict failures in a number of startups targeting this. I predict no pronounced progress in self-driving cars nor any particular grand use for them. I predict several hollow attempts to overlay symbolic systems over ML/DL or integration attempts of it with ML/DL from prominent AI figures. I predict pronounced failures in this effort cementing a partial end to the hype of ML/DL.

I predict we will get a pronounced development outside of run-of-the-mill corporate/academic gatekept/walled garden ML/DL that will forge a new and higher path for AI. Hinton's words from prior years will have been heeded and the results of a new approach to AI presented. A change of guard, a break from the necessity of a PhD, a break from the echo-chamber of names, and a broader and more deeply thought out vision. Disruption not of low-hanging-fruit but disruption directed at the heart of the AI/Technology industry... So that we may finally progress from this stalled out disinformation/misinformation/hype/gatekeeping/cloud/all-your data-belongs-to-us cycle.

It's 2020 after-all, time for a new age.
Correct me if I'm wrong, but Amazon was strongly cash flow positive as of 2002. Moreover, their operations were throwing off cash the year they went public (1997).

Everyone should be considering this a bit more because it says something about the irrationality of the current market. Large VC funds were investing under the thesis that some of the current crop of (now) less than impressive unicorns could follow the Amazon model: invest in growth at the expense of net income. These unicorns haven't simply failed to produce positive net income by intentionally following the Amazon model, rather they've simply burned through mountains of cash following less than impressive business models. They never followed the Amazon model to begin with.
It's not about server-side computation resources or bandwidth, it's about latency. If it takes 50ms to communicate your position to the server and 50ms for them to reply, that's 1/10 of a second for every position update, which is an eternity in high-level play. Netcode is really hard, anti-cheat is really hard, and mashing them together is really, really hard :)
.. and the doctors he talked to felt they already had the knowledge they needed! If anything, they felt, perhaps, that this devalued their existing knowledge. And they don't make 10% more money for providing 10% better outcomes.
did you try selling to pharmaceutical companies what about healthcare provider networks what about EMR companies? they would probably compare you to open source tech R packages, but it's worth a shot.

you could make a "reference database" out of it and charge for access to the latest version
You can't replace the graphics driver in Windows unless you boot in test mode, and some games like Fortnite will refuse to run if the system is booted in test mode.
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This is a feature of lichess, which is free and open source.
Maybe the solution there is to stop making games be about the things computers are better at. They're better at aiming, fine, let them be. Put the aimbot in the game from the start.

Then instead you have a FPS with multiple weapons and it takes several seconds to switch between them. One has a high rate of fire but is useless against players with armor, another is the opposite. Cheaters don't know if the opponent is wearing armor (or what kind) because the server doesn't tell them that until they're in the same room, by which point it's too late.

Make certain weapons better against certain defenses, so it's a matter of predicting what your opponent will do and being ready for it. Make the humans do the things that humans are still better at, instead of trying to prevent a computer from beating them at things computers are better at.
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Maybe, but the problem is that smokers cost the company a lot more than non-smokers, due to this country's strange expectation that your employer should subsidize your health insurance.

If we didn't have this idea that your ability to afford health insurance should be tied to full-time employment, then this shouldn't be an issue. But I can see that companies have a very good argument for discriminating against people who willingly choose to harm their bodies and incur higher healthcare costs. If we as a society don't want companies forcing their will on employees for things they do off-hours, then maybe we as a society should change the way healthcare insurance is handled.
Since tools like DXVK (and ReShade on Windows) can allow people to see through walls, I would expect Valve to ban them, too. Even if they are not used in any blatantly obvious way, e.g. by shooting someone you shouldn't be able to see, they still give the cheating player a large advantage by letting them know where on the map the enemies are.