skysight-inc/HackerNews huggingface dataset:
Same story with their scooters IMO. I would rather walk a block or two and find a Bird than settle for a Lime. On at least one occassion my options were Grab a Lime or walk 10 blocks; I walked.

Though, I feel like the reasoning is opposite for the scooters; they're absolutely huge vehicles that were clearly built to last in the harsh environments they're deployed in, and in doing so gained a ton of weight and volume. They're slow. The brakes are often so strong that they could cause riders to loose balance from the negative acceleration. They manuver so poorly that I feel unsafe while riding them. The big reason why I love the gen-1 Bird scooters, as unreliable as they are, is because they're so damn nimble, I have zero issues taking super-tight turns and weaves, and often that's necessary in urban environments just to protect yourself from the hazards of broken roads or cars. The newest gen Bird scooters strike a decent balance between being lightweight, fast, and (I assume) durable to the extreme environment.
“Juicers”
Who gets to decide what is or isn't a misuse of resources? People like you would rather use force to bend others to your worldview than actually execute on realistic solutions.
this story got killed for some reason
So global warming has nothing to do with it?
You mean your company actually has a kb that is filled and up to date, worth migrating? I want to work at your company!

I guess no matter how great the product, the issue is with people. Hardly anybody will keep up writing static content and maintain it so it stays relevant. The best knowledge base is probably a great Q&A system with an active community.

If your current knowledge management system is too empty to your likings don't bother buying a new knowledge management system. It won't help. Instead, give your employees and customers a central place to ask questions and grow a culture that answers them as a first priority. Make that searchable and throw away your knowledge management system...
Why would end-to-end help when it's the other end that's watching?
I was able to rent a scooter from Bird for $25/month in a city and it cut my transportation cost from $170 to like $50. It eliminated ubers to/from events, public transit to/from work, bike rentals to/from gym. Definitely recommend owning a scooter
Does anyone actually think this is a profitable market?

Electric scooters are expensive, repair and charging is expensive. It’s a seasonal business. Vandalism/abuse is fairly common.

In terms of any environmental benefit, I highly suspect more gasoline is being consumed to collect and distribute scooters than the offset of a few last mile transports.

I suspect the cost to the consumer would have to double for it to maintain any profitability, and the demand already sucks.

Why did the VCs value these as billion dollar companies? Desperation?
> putting backup requirement on customer (when it is your fault) is pretty unfair.

Then they need to pay more for their "Simple" hosting.

> I think price of the product shouldn't effect minimum requirements.

See above. Sigh.
>Everything in this essay comes from this source. https://fermatslibrary.com/s/why-some-things-are-darker-when...

It's less hand-wavey. Also, the reflectivity of water is very low at low angles of incidence, rising to 100% at normal angles. Less light reaches the wetted material. https://en.wikipedia.org/wiki/File:Water_reflectivity.jpg
As a former Compucom slave, I can also confirm.
This. A friend of mine bought one but still rides some from times to times when its practical. He also owns a car but still rides uber from times to times.
Why not considering following :-

- Wordpress.com

- Blogspot.com

- FreelancerCV.com
Yeah, I feel saying "better competitors" really does Be a disservice. They largely failed due to an unfair playing field and very shady practices.
Iran’s teen hackers are defacing unsuspecting US websites
Most immediately this is the result of the trade war with China. The government has been pumping tens of billions into the agg industry. But most of this money is funneled to the big players to keep them from complaining too much, and it does nothing for the supply-side. So the small/mid tier producers have been hit especially hard.

It could be that long term trends were headed this direction anyway, but the trade war has been devastating to the industry.
Cool of them to publish their testing methodologies, I agree with them very well. I just got done designing 3 wireless testing cages for the company I work for so I've been looking a lot into what makes good testing methodology for wireless. Very nice to see them dive into airtime right away and they actually cover it pretty well. I wouldn't extrapolate their conclusions on mesh and why it's fine to anything beyond low density home environments but that's what 95% of the readers fit into so perfectly reasonable.

One grave conflation they make is they keep referring to web streaming as actually performing like a stream of data. In reality web streaming (outside of WebRTC) is actually very bursty chunks being sent usually in the range of every 1-5 seconds. In the Wi-Fi world the two types of streams can behave very differently. Not that their test is bad but it isn't necessarily testing what they say it represents.

The HTTP workload is pretty representitive of what it says it's testing. The rise of HTTP/2 changes the way 16 connections to a single site would work but in reality loading a single site often connects to multiple servers anyways.

I was very happy to see them point out the large swings in jitter/latency under load as well!

Unless you're in a rural area and don't have too many legacy wireless devices I'd really caution putting anything in 2.4 that doesn't need to be there. It does penetrate farther but it's also only 20 MHz of air space that almost always has to operate with legacy compatibility (damn you Nintendo devices and cheap IoT wireless N chips). If possible try to keep everything new on 5 GHz only and if you have a lot of devices or use a mesh utilize 2 40 or 80 MHz 5GHz channels depending on your wireless environment.

Overall very good and much better testing than I expected. If there were anything I'd add to such an article it'd be a section in any wireless testing article pointing out "you'll almost always be able to get better improvements by replacing your clients instead of comparing wireless routers of the same generation". Obviously more harder to do/more expensive but I think a lot of the time home users think the access point is the be all end all of how good your wireless will be, forgetting it's only 1 device out of a dozen in the house and just knowing this can set more realistic expectations and a better understanding of what you're actually trying to improve.
> they seem very popular in some places and barely used in others for reasons that often aren't immediately obvious

I think a lot of this has to do with regulation. Some cities actively encouraged scooters and bikes, some took a hands-off approach, and others banned or restricted them to the level where it was difficult to operate.

You can really see the effect of this in San Diego, which at first welcomed the bikes and scooters, then reversed course and banned them in a lot of places [1]. Several of the companies left town after that happened, and you see a lot fewer bikes and scooters around now. It's still the same city, same weather, and there are more bike lanes than there were two years ago. The only thing that changed is the regulation.

[1] https://www.sandiegouniontribune.com/news/environment/story/...
On one hand, this is a great effort and I'm sure will help commuters a ton.

But on the other, why on earth does the bay area have 31+ different transit agencies??
Typically, at least in the US, a locked door can be opened from the inside without a key for that reason.
I think Futhark approaches this with uniqueness types. A bit strange (maybe that's just me?) but it works well with arrays.

Also it compiles to Python nicely.
> If you are a 70 yo female, you’re expected to live 2 years more than a 70 yo male.

The difference is still a year at 86, and doesn't fall to par until supercentenarians.
The Cyber War Threat Has Been Grossly Exaggerated 2020
My first Unix experience (~1993) was in a heterogeneous shop doing electronic pre-presss.

SunOS 3.5 on OEM PDP-11s. SunOS4.1.4 on SPARC Stations. SunOS5 (Solaris) on SPARC Stations. DG/UX on a pizza box. SCO on (I think) a 386
The bike vs. scooter thing is interesting (although a non electrified scooter would NOT be a good idea, much harder than biking a comparable distance with a weirder, less efficient motion).

I think that objectively a bike is a much better option for longer trips like this. Both in terms of efficiency and safety. I'd be VERY surprised if on a per mile basis, scooters weren't much more dangerous than bikes.

However, scooters FEEL safer for non-regular bike riders because you are closer to the ground, the helmet feels more optional (though it should not be) and riding on the sidewalk, where you are away from cars, feels like more of an option on a scooter than on a bike (although again, it shouldn't be).

I'd certainly advise a bike if the route is at all flat, and an e-bike if it isn't, but I can understand why that seems like a less appealing choice to some.
No response and more downvotes.

Exactly what I expected.
If you have to walk 3 blocks for a scooter, then they really aren't "ubiquitous", I'm not a scooter user, but they seem to litter the sidewalks around here, so it's usually only a 1 or 2 minute walk.

As you said, if it's much longer than that, then there's no point -- I don't think I'd want to ride a scooter more than a mile or so anyway, so if it takes me 10 minutes to find one, I may as well just walk the whole way.
Corporations who collude with or otherwise use government/laws to manipulate markets in their favor are even worse in IMO.

The fact still remains though that the housing developers wouldn't be able to trickle out homes at their whim if the government enforced limits on housing weren't preventing other developers from competing.
A study examined coordinated care for the most expensive patients
In this context, "end to end" means being encrypted between the camera and the user's devices they use to watch the camera, with the cloud service acting as an intermediary between the two, and unable to decrypt the data.
Ingestion rate of 1K metrics per second can be handled by any solution on low-end hardware. I believe even ancient Raspberry PI would feel comfortable with such a load :)

VictoriaMetrics scales to 50M+ metrics per second on a single server [1], [2].

[1] https://mobile.twitter.com/MetricsVictoria/status/1209116702...

[2] https://mobile.twitter.com/MetricsVictoria/status/1209186575...
Jets Blast Out of Black Hole at 99% the Speed of Light
If more than (or equal to) half of computers are used by only one person, then the median user count is 1, no?
First of all:

> dedicated on-premise hosting

I did not say on-premise for a reason. Most people are not well placed to host on-premise. For starters it tends to require ops staff on site, which in many countries means a minimum of 3 shifts of a minimum of 2 people. On-premise deployments rarely makes sense.

I said dedicated hosting, which implies renting servers from providers like e.g. Hetzner.

But that said, you can replatform to anything from anything and save money in most organizations, because most organizations tends to be very bad at optimizing cost, so this to me says very little.

Most of the systems I've moved over the years were on the other hand carefully architected to be "cloud friendly" to start with. Some of them started out on cloud platforms and were migrated off to save money.

When you on the other hand start comparing the amount of compute and bandwidth you can get for the same prices, it becomes very clear how overpriced they are.

You can easily find bandwidth at less than 1/10th the price of AWS for example, and in fact I've had clients where their bandwidth bill alone at AWS was bigger than the total hosting bill after I'd moved them elsewhere. No amount of architectural change of their systems will change that - at a minimum you need to reduce the data transfer from their AWS setup. Now, you don't need to move everything out of AWS to fix that - often the savings you can achieve by cutting the AWS bandwidth bill can pay for an entire CDN....

Dedicated hosting also tends to give you far more flexibility in the precise hardware configuration to the point where savings can be similarly huge by substantially reducing the number of instances.

> I believe the business benefit of the agility gains that come from instant and decentralized resource provisioning will always trump any cloud bill...

Nothing prevents you from spinning up cloud instances when needed. Most dedicated hosting providers today also offers cloud instances, so you can typically do that even with a single provider. In practice, the cost difference between dedicated and cloud typically allows a substantial overprovisioning and still saving money, but if you're prepared to use cloud to handle spikes, you can save even more by using dedicated by going closer to the wire, because you know you can spin up cloud instances to take the peaks.

I've set up and operated systems like that which balanced loads over both colo's, dedicated hosting and cloud instances seamlessly several times.
Are you the founder of Hype Machine? Haha, because Anthony said the same thing on my product hunt post: https://www.producthunt.com/posts/you-will-die-in-x-weeks

timestripe is definitely much more snazzy and robust - I like it!
> use a single lock-less queue

I dare say that Multiple-producer + multiple-consumer lockless queues are not "difficult", but straight up "impossible" to write.

You MUST make a decision early on:

1. Settle on single-consumer / single-producer ("True" parallelism of 2x threads best case) on the queue, retaining the "first-in / first-out" property of the queue.

2. Decide that "first-in / first-out" is unnecessary in your use case, and generalize to multiple-producer / multiple-consumer code.

After all, it is impossible to define first-in / first-out if you cannot define an insertion order, or consuming order. If you decide on a defined insertion order, it is equivalent to deciding upon a "single" producer protected by a spinlock or mutex. (And lo-and-behold, all your code is just a very, very complex mutex). Ditto for the consumer side.

-------

You CAN write 1x consumer + 1x producer lockless queues with defined total ordering. You CAN have "many" consumers sequentially "acting" as the 1x consumer, or "many" producers "acting" as the 1x producer (by sequentially choosing one through CAS-loops or mutexes).

But I dare say, 30x consumers each being a "consumer 1 at a time" isn't really a multi-consumer queue, its a 1x consumer queue with a mutex on the front-end :-)

-------

Deciding upon a 1x producer / Multi-consumer (or the inverse: multi-producer / 1x consumer) queue is just a grossly inefficient queue.

If you cannot define the insertion order, then you cannot define the removal order. Similarly, if you cannot define the removal order, you cannot define the insertion order. You might as well "undefine the order completely" to have better performance.

-------

In any case, your assumption here has a gross amount of complexity you're ignoring. Lockless queues are NOT an item to be trifled with.
I am an expensive consultant. My advice is skip HTTP/2. Either wait for HTTP/3 to ditch TCP or start inlining resources into single HTML documents to reduce round trips.
it used to be possible to block this with a patched dnsmasq that allows setting a regex, but the fork is not maintained and merging the patches to upstream is also not much fun.

so I hacked something together that uses the linux kernel NFQUEUE: https://github.com/DyslexicAtheist/nfq

this way I have guarantee that these domains will never be resolved (which is what I want :))
Yes. The idea is that if we "break out" of whatever simulation we purportedly exist within, none of the concepts in the enclosing universe would make any sense to us.

(I happened to be watching How A Plumbus is Made when I wrote the comment, btw).
Reminds me of copy-on-write. Operation can reuse input buffer if it holds the sole reference to it. In the scenario you described, you manually ensure and write this behavior for the rest of the pipeline.
In fairness, I don't think most people care about the OS at all, FOSS or otherwise; they care that the UI is something they can use, and that their apps work. If you perfected WINE overnight, I'll bet you could sit 80% of the population down at a lightly-skinned FreeBSD box and they'd never know.
Mansions in Pacific Heights and condos in SOMA are very different. If mansions in Pacific Heights are indeed vacant (which, to be clear, I doubt they are) that would suggest that a better use of the space would be to split them up into new, more affordable, units.
:facepalm: you are correct
I was about to say, Coca Cola is the epitome of a well diversified, but focused company.
I’d say 75% of requests for meetings I get conflict with something already in my calendar. Nobody bothers checking it before just flinging something in at a time that’s good for them, despite everyone’s calendar being visible to everyone else in the company, and having support for finding a free slot.
My interest was piqued by the "location-neuron" as well.

I like the sci-fi possibilities as you pointed out: an ide that rearranges itself based on focus or products that guide our awareness to salient facts (say a pedestrian in front of a car).

Perhaps taking that to another level: while learning or reading, are you paying attention to what the material "thinks" is appropriate.

Clearly, there's a gap between the different types of attention, and in this case the attention mechanic described is important but rudimentary (it doesn't seem like the neurons include conceptual focus instead of visual).

If we gain better understanding of these mechanisms, and the necessary technology exists, I could imagine learning material that provides users with conceptual paths/guides to follow in a much more intuitive way. It's not thinking for you, but guiding you towards the concept embedded in the material.

Towards this goal, if we could actively use information gained in accordance of the article, we may already be able to help children with some learning oriented tasks.

Exciting stuff.
I'm working on IP cameras sending their video to Surveillance Station on my Synology NAS. Totally local recording, and was super easy to setup with some random IP cam I had laying around.

My plan is to run cable for PoE cameras soon. Will have 24/7 recording, but accessible only locally.
Sorry it caused anxiety - do you have any thoughts on how to keep it a bit jarring, but not as anxiety-inducing?
So while that is true (and not to go too far off into the weeds on an analogy), in an emergency, people are trying to follow procedure under pressure and the odds of error in operation of an interface increase. You want the interface that is used in an emergency situation to either be well practiced or absolutely as intuitive as possible.

To destructure the analogy and give a concrete example, if I'm dying of allergic shock I don't want my doctor unable to access my medical history because somebody in the process can't remember how to "break glass" on the encryption on my medical records, even if there's a procedure to do so. I want my records in plain text format and as readable as possible.
Square’s appointment service has a similar feature where it can block off appointment slots so customers can’t book. Presumably a fake-it-til ya make it feature.
This is exactly the kind of abuse you can expect given how easy and consequence-free it is to file a DMCA takedown request. If there was a real, financial penalty for filing obviously false and incorrect requests, I doubt they would waste their money on this. Since there isn't, it's clear from looking at the maps that someone at the MTA is pissed that someone outside their organization did a job that is so incredibly better than their work that it makes their map look like an outdated piece of shit from the 1800's. But that's just a matter of personal taste. Taste matters though, especially when someone in power feels like their taste has been offended and decides to use the courts and our extremely generic and consequence-free laws to enforce their own views.
In certain cities, that might actually be faster than driving.

Me and my friends accidentally ended up testing that theory in LA. We were going to koreatown from Santa Monica and had about 10 miles left. Half of us decided to use limebikes, another half ended up taking uber. The people on limebikes arrived at about the same time, despite the whole scooter group having to stop every 30-40 minutes and search for another scooter, since in a group of 5 people riding those, there would inevitable be one that is running out of charge in that time interval.
Why does this blog post have a recaptcha?

In addition, I just finished reading the Rust book last night, and I don't believe this is what interior mutability is (at least as used in Rust).
How Cursing Impacts Sales
A Critical Reading List on Tech
> I would dearly love to see a solution that allows me to code in a functional style without sacrificing performance.

Uniqueness types would make mutation easier to track: you'd still need to write an imperative style, but less to worry about.

I think the "functional-style" stuff in this area uses compilers (i.e. accelerate or futhark) that can analyze whether copying is necessary because the programmer uses various high-level functional combinators. I think J does something like this as well (?)
Hormone levels fluctuate significantly from day to day based on a variety of factors so a single snapshot testosterone level test doesn't really tell you anything useful (unless it's way outside the reference range). If you suspect a deficiency then you'll need multiple tests over weeks taken at different times of the day in order to get a reliable diagnosis.
To ensure that we will never have a viable public transportation network that can make high-density mixed-use walkable urban environments possible.
Too much money, chasing not enough alpha.
>Why did the VCs value these as billion dollar companies? Desperation?

Because VCs get paid from selling the shares to the public. So as long as a general unsophisticated investor is expected to buy in, it's a good deal for a VC, even if the underlying business model is laughable.
I chalk it up to "The MTA employs a bunch of lawyers. Those lawyers need to show they are doing something." Pretty standard stuff.
The free market doesn't work well with fly-by-night operations, or with sticker price being 0 and money being made indirectly. Advertising as main revenue source destroys the mechanism of competition and its consumer-facing benefits.
> Why did the VCs value these as billion dollar companies? Desperation?

That's my guess. 10+ years of very low interest rates and wealthy people having more and more free cash seems to have led to a lot of crazy valuations in tech investing and elsewhere.
Here in Lima their scooters are bigger and more robust looking than the competition (Movo and Green). Lime has only been operating here for less than half a year and I was looking forward for them to bring bikes too :(
Iran mistakenly shot down Ukraine jet – US media
He's a friendly = OK?
What do you use for motion detection? I've found the Unifi NRV motion detection to be very poor. Especially raining at night.