skysight-inc/HackerNews huggingface dataset:
You're still assuming a human driver. Most of the carrying capacity of roads is dictated by human reaction times.

A human takes 150-250ms to perceive a change in the environment and react to it. A car travels about 15 feet/second for every 10 mph of speed. Hence the rule of thumb to stay one car length apart for every 10 mph of speed; that gives you about a second of reaction time, a safety factor of 4. It would be suicidal to drive one foot away from the car in front of you at 60 mph, as a human.

It takes a computer maybe 10ms to detect and react to a change in front of it, and that's assuming fancy computer-vision algorithms (it's much easier if you just put a laser beacon on all vehicles that rapidly flashes an encoded representation of the vehicle's ID, velocity, and acceleration). And computers are much better at measuring velocity, acceleration, and position with the help of a LIDAR or doppler radar. In 10ms, the vehicle will move roughly 2 inches per 10mph of speed. Suddenly it's reasonable to drive 60mph with 2-3 feet of separation between vehicles.

At that range, though, you might as well just put down a hook and latch the vehicles together. And I think that's what the OP means by cars <=> buses <=> trams <=> trains existing on a continuum, and autonomous vehicles making this clear. We'll likely get something that works like a scooter for last-mile transit, and works like a train for long-distance trips. As it enters a main road, the computers will automatically adjust speed so that they can "dock", and we'll fit an order of magnitude more vehicles onto the road.
I'd agree with you on autopilot. Though, I think all that most people want is good crash avoidance plus lane keeping and traffic-aware cruise on the freeway. A lot of other car companies are there as well, and I'm starting to believe that true level 5 is a decade off or totally impossible.

Supercharger access is becoming less of an exclusive as well. Electrify America is putting in a lot of stations (there's a couple near me right now, with about a dozen more planned) that support 150kW now (30 more than a Supercharger), and 350kW as soon as there's a car that can take it.
Email me. I actually have some very relevant experience. What sensors are we talking?
I avoid Amazon for anything other than books, lately. For anything else, there's no telling what you'll actually get.

As noted previously on HN, they're even selling fake books on Amazon. One was a Python programming guide.
This is the same thing for all the free seminars you hear on the radio. At best, they already have a position and are running the pump train so they can cash out.
To me, it's not the chance of somebody getting in trouble that worries me, but rather the blatant disregard and disrespect for intellectual property rights.
I'm still[1] waiting on those silicon nanowire batteries. 8 more years!

1: https://www.reddit.com/r/science/comments/dnlnf/breakthrough...
They do not, the max speed limits on rare long stretches of track are around 45 mph. Most stretches are well below this.

https://ny.curbed.com/2018/12/19/18146933/mta-new-york-subwa...
Not to mention Warby Parker glasses are 2-14x more expensive than Zenni.
"The team says that the two spheres likely joined as early as 99 percent of the way back to the formation of the solar system, colliding no faster than two cars in a fender-bender."

Welded together by gravity, i'm really in awe seeing the, by far, weakest power so lovely at work.
Maybe for some problems it is possible to include just the final answers? e.g set of possible inputs and expected outputs - so one can test the solution.
Since when do people count exports as emissions? No one is forcing countries to buy that oil and refusing to sell it is inconsequential.

Also their grid is 100% renewable and per capita they are around half of US emissions and on par with most of Europe.
I personally find it amusing and interesting that the physical object, Ultima Thule, looks similar to the Virtual Game logo "Ultima"

https://upload.wikimedia.org/wikipedia/en/6/6a/Ultima_Online...
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I find it unintentionally funny, as people who rely on transit in the US are either big city urban elites, or the poor stuck in crappy burbs with shitty mobility. Thus, "more transit" is itself the elite projection, as it supposes that what's good for the urban elite, must be good for everyone else.

This is kind of bizarre reasoning. Suppose there's mass starvation in a nation and I were to say "I find it unintentionally funny to call for more food, as people who are able to eat regularly are the urban elites. Thus, 'more food' is itself the elite projection, as it supposes that what's good for the urban elite, must be good for everyone else."

Sure, suburban transit is terrible but that's argument for "transit only matters to people who already have."

Busses as we know them today will become obsolete, as they are functionally equivalent to a heterogenous mix of autonomous vehicles driving in the same direction.

"My imaginary solution is obviously better than something that's been tried and with proper planning and funding work now".
The Jag and Audi are _absolutely_ competitors.
I don't think this is just semantics—isn't this actually a cafe staffed by paralyzed people, who control robots? This headline is bit like saying a warehouse is staffed by forklifts, controlled by operators.
I suppose the cars heats resistively below zero, and with a heat pump above
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Does the price include the parts too ?
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Is It Possible for Macs to Get Viruses?
I don't like corporations in politics. Successful businesses have done a lot of good, but they need to stay out of politics. (Read: And as long as they are in politics the unions have to be, too.)
For a more detailed summary of the amazing collaborations necessary and challenges faced, Scott Manley: https://youtu.be/ymJRlUQfPfQ
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A landscape of the major 50 B2B SaaS app stores
No, they say it as if cookies don’t have a built in authentication or encryption method (when the client is untrusted).
No, they aren't.

Making a one-size-fits-badly policy is how you get large amounts of shadow IT and assets on non-controlled machines.

The security policy has to balance with what the users are tasked with, and what's expected. And when IT won't budge, you get really weird stuff happening.

I've seen professors running a linksys natted network on a uni lan, precisely because he needed control and lookup of IPs for his robotics setup. And Uni IT did their knuckle-dragging usual of nothing (blame the user). His solution was "insecure" but that went to his real task of robotics prof.
this elite projection describes the common phenomenon of outsiders (and even local elites) disparaging LA for having no/crappy public transportation, which is odd to me as an multimodal angeleno who gave up my car years ago.

this admission was refreshing and identifiable:

> "And since I’m one of these elites — not at all in wealth but certainly in education and other kinds of good fortune — it’s sometimes my work as well."

but this is probably of most interest here, with all the talk of autonomous vehicles:

> "Now, the same mistake powers the endless vague promises of tech disruption in transit, especially the mathematically absurd notion that transit that comes to your door when you call it will scale to the entire population of a dense city."

basically he says we don't have enough (road) space for every person to be taken directly from point to point in a vehicle. currently this is (partially) solved by having people walk the last mile.

let's have electric scooters/bikes at every train and bus stop--they can solve the point-to-point first/last mile problem while being relatively dense. not everyone will use them, but with critical mass, it will reduce overall congestion.
Prompted with:

Given A, prove Z

You'd append

Assume G => H

...to the prompt, then you'd prove A=>G, and you'd prove H=>Z.

You're essentially just using one-too-many axioms to get the job done, which is less elegant, but correct.
That's all fine and good but Xerox is no longer in the business of selling this book and does not suffer any harm from the reproduction, neither do the authors.

It's a bit like public libraries, which also 'hurt' book sales, and there the books might even still be in print. The Smalltalk 80 Blue Book is an important part of computer history, the more copies there are of it, digital or otherwise the better.
Simple. I'm pretty sure I won't be the first to fall victim to an exploit that is purely academic at this point. Why on earth should I take a large performance penalty on my own PC to mitigate an attack that I'm pretty sure (a) will never be a problem for me and (b) that will almost certainly arrive with plenty of warning if it does?

This whole business is massively, massively overhyped from the point of view of individual workstation users. Not every system needs to be locked down like NORAD. Doing so is a failure of basic threat modeling.
I'm sorry to be a little off-topic here, but can someone please tell me how this guy got those math equations looking like that? They look like the common Latex font, but they're neither SVG nor PNG output of Latex as I first thought. How did he manage to get this??
Hey, thanks! Gotta make the list first :)
I have a copy of this on my bookshelf. I highly recommend reading the portion of the book about the structure of the object memory. An interesting approach that influenced much of what we have today in VMs, with one notable exception.

In Smalltalk there was no filesystem, so the canonical representation of the system was in memory at all times while the system was booted. It dumped and restored this object memory on shutdown and boot. Its structure also allowed for automated refactoring at a semantic level (objects knew who their callers were) which is something no other language I've ever used is capable of.
As a Model 3 owner, I have never been happier or more impressed with any car I have ever driven.

It’s more fun to drive than my old Camero SS. It’s more comfortable than my old Infiniti. I absolutely love the interior aesthetic. And I just paid $3,500 to PPF wrap it because I think it’s absolutely gorgeous and I want to keep it looking that way.

Oh, and I paid $45k not $65k, and it saves me at least $100 a month on top of that.

You are blowing smoke with “roughly as comfortable as a Camry”. The ride quality is better than BMW in my opinion, and that’s before throwing in the mental benefits of Autopilot combined with no engine noise making my commute the most peaceful part of my day.
I have read that there are few contributors because the current maintainers are a little hostile towards people who want to try and improve GIMP.
Good to see new tooling on analytics. Another alternative is Matomo (Piwik, formerly) https://github.com/matomo-org/matomo
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"Busses as we know them today will become obsolete, as they are functionally equivalent to a heterogenous mix of autonomous vehicles driving in the same direction."

This is not an opinion any experts on mass transit share (including those who are bullish on autonomous vehicles).

For an outline of just one of the arguments why this is a naive view (at best!), please read the author's "The Bus Is Still The Best" (https://www.theatlantic.com/technology/archive/2018/10/bus-b...) and an interview with him in the Financial Times "A conversation about how public transport really works" (https://ftalphaville.ft.com/2018/01/26/2198114/a-conversatio..., free FT account required, but not paywalled).

Some relevant quotes from those articles:

“How many people’s doors can a driver get to in an hour, including the minute or two that the customer spends grabbing their things and boarding? The intuitively obvious answer is the right one: not very many. An Eno Foundation report promoting microtransit could not cite a case study doing better than four boardings an hour of service. John Urgo, the planner of demand-responsive service for AC Transit in Oakland, California, has said that seven boardings an hour is “the best we hope to achieve.” Few fixed-route buses perform that poorly. Across sprawling Silicon Valley, for example, fixed-route buses carried 12 to 45 people an hour in 2015. In a dense city such as Philadelphia, the number can exceed 80”

“No, of course, the driverless car people will say, no, cars will fit closer together and they’ll be smaller and so we’ll fit more of them over the bridge but that’s a linear solution to an exponential problem. The other dimension of this problem that you must keep in mind is the problem of what we, in the business, call induced demand. And induced demand is the very simply idea that when you make something easier, people are more likely to do it and this is why, for example, when you widen a motorway, the traffic gets worse or it fills up to the same level of congestion that you had before. It’s because when you actually create new capacity, people use the capacity and you end up back in the same point.”
The late 1980s (after the Mead&Conway revolution) seems like such a magical time for VLSI to me, as someone who wasn't around at that time.

Does this spirit of getting a few engineers together and taping out a chip in a few months still exist anywhere?
As long as we're in anecdote world, I'll offer that I've had nothing but positive experiences with Warby Parker. To take your examples:

1. "Cheap plastic". Is there expensive plastic, really? I've owned much more expensive (but still plastic-framed) glasses and have never noticed a difference in quality.

2. "Very poor fit". Fair enough, I will offer though that I had a fitting at one of their brick-and-mortar locations and the glasses I got fit very well.

3. "Lenses that easily scratched". The details on their lens offerings are here, https://www.warbyparker.com/lenses . Again, not a problem I have encountered.

I don't doubt that there are better glasses than Warby Parker, but I'd bet that they're as good as if not better than basically everything up to the 90ish percentile range.
The thing is I’ve never seen a compelling and novel use for blockchain. Everyone and their dog has some shiny presentation for how they’ll use the tech, but no one and I literally mean - no one - who I’ve talked to about it has an answer for the question “how is blockchain solving a problem that is currently unsolvable with other tech?”

Don’t get me wrong, the idea of decentralized anything is cool to me. I’d love for it to be an avenue for reclaiming sovereignty or privacy or whatever else. I just have yet to see it actually solve a new problem. And switching from the way things are to using blockchain “just cuz” isn’t really a step forward imho. It’s a step sideways, where now we have a different backend but in the end nothing has improved.

I’d be happy to hear novel solutions blockchain provides :)
Spurring demand in EVs is offsetting that though. Probably not a huge difference however.
https://github.com/KaTeX/KaTeX

(another project in this space is https://www.mathjax.org/)
This is my biggest concern as well. The problem is, by the time it's consistent and has all the bells and whistles, it'll probably have to be renamed because all of the cables/devices in the past who implemented it incorrectly, at which point they'll think it's a good time to add new features while at it, and lead us back to square one.
Yeah they certainly benefit from already having the infrastructure already in place, but most large cities are only going to get more dense as time goes on and adding additional roads to urban cores is always going to be very hard. After a certain point the only way to provide enough transportation is to go underground just to avoid tearing up the existing city.
imho letting more people read this material shows higher respect to it and its creators than letting it be forgotten.

The book is out of print and not available otherwise. No one is making money off this book.
Essentially that. There is a risk a skipping a majority of the proof and hence a majority of the points, but point-wise it would work out better than handwaving the step and getting negative points.

It's been about 25 years, so my memory is a bit fuzzy, but it was an analysis class. I don't remember if I ever availed myself of this. I did have a classmate who completed, but didn't turn in his homework a couple of times. (I don't recall if it was the entire problem set or just a couple of problems that he omitted, but he got the paper out to consult while the prof was going over the answers.)

The teacher was competent but quirky - he also required the students to purchase a stapler (to staple their homework) and locked the door after class started (if you were late, tough luck).
Seems like there is a lot of Tesla hate on the internet for some odd reason these days.

In part because there is a lot of money to be made in spreading Tesla hate on the internet these days.

Think short sellers, etc...
Part of it is spreading out the costs over time. None of the individual construction projects is taking 40 years, LA Metro just has a grand plan for the next 15 years, the 15 years after that, etc. Some things take time because of environmental reviews, buying land (or legally forcing people to leave), planning, things like that.

Another reason why they are building in stages is that some of the new transit projects aren't as useful until other ones are finished. For example, there's plans for a big tunnel (a few miles longer than the one you linked) that they're trying to finish in time for the 2028 Olympics (although construction hasn't started yet). A lot of the projects on the other side of the tunnel are being done with the purpose of getting people to the tunnel,