skysight-inc/HackerNews huggingface dataset:
> s far as I know no solid state boosters were ever re-used (how would that work?)

Nitpicking of "reuse" vs "refurbish" aside the SRBs were significantly reused:

> The RSRM was designed to make the most use of recoverable hardware. The majority of metal hardware was recycled through ATK’s Clearfield refurbishment plant in Utah and returned to a flight-qualified conditioned.

https://ntrs.nasa.gov/citations/20120001536

The boosters used for the final mission, STS-135, even included parts from STS-1! https://spaceflightnow.com/shuttle/sts135/fdf/135srbs.pdf
Ask HN: Help me price my SaaS app
I've finally finished the MVP for my first SaaS app, but I'm having a hard time figuring out the pricing plans.

It's not something new or revolutionary, but marketed properly will gain traction.

Here's a description of the app:
- register and account and allow your clients to book services with your business
- businesses can opt-in to send clients SMS notifications on several events (confirmation, reminders, reservation changes)
- as a business you get a booking page for your services - domain.com/my-business
- you can integrate it with your website: iframe, redirect or js widget
- businesses can have multiple staff (staff = people, gym rooms...etc)
- clients can book any imaginable service (free, fixed price, variable, group bookings...etc)

Main selling point(s):
- there's a new law locally which kinda forces businesses to digitalize as much as possible
- there are a few solutions, but they all lack SMS notifications

How do I price it now?
-- V1
I went to meet a few clients (6 actually) and they all said it's too cheap (of course they signed the contract)
Currently, I charge a fixed fee per staff (paid at the end of the month) + fee per SMS sent (prepaid, load the account with SMS credits).
So, if a business (hair salon) has 3 employees, which have an average of 100 bookings/mo, the business would pay 3 x staff fee.

-- V2
Another option would be to price it per reservation and include the sms notifications in it, but 1 client out of 6 doesn't want all the sms notifications, he wants only 1.
So if the business will have 200 bookings in a month, it would receive the bill at the end of the month.
But what do I do with the cancelled bookings and what if the client doesn't pay the bill? I still pay for the sent SMS notifications :(

-- V3
Please help!

PS. this is a throwaway account because my work colleagues know my real one and I want to keep this business private.
PPS. sorry for the long post and thank you for reading it
The same about diamonds.
We sell you this product, but we will make damn sure to decide what you can and can't do with it and will therefore throttle its abilities.

Linus was absolutely correct.
Or actually solve the problem and stop making companies offer health care. This is a stupid system. So many people worry about losing their job in fear of loosing their health care. So many people do not have healthcare because they do not have a job. A job and healthcare should not be connected is any way.
In particular in Ruby it derives from "Ruby value" rather than the C/C++ rvalues that can appear on the righthand side of an assignment.
JPEG XL
Can you share your sources?
Your statement wasn't false owing to being a tautology since everything keeps moving until it freezes - hence the word. However, those wind turbines continue operating in far less gentle weather then what hit Texas. There is, of course, a temperature[1] at which everything stops moving and operating, but well designed engineering can push that down pretty far.

1. If it's not higher - it'll be at 0K since that's what absolute zero means, an absolute lack of generally useful energy.
That's a good point, besides not following the documentation (or they weren't aware they were supposed to "suppress payment of principal amount). They UI "stop sign" prompt should show the # of on the confirmation machine. It should accurately summarize everything they are doing, not just a simple "yes/no" they've seen a bunch of times.

Just like in Hawaii when they sent the wrong cell phone warning of an incoming NK missile attack, it could easily have been prevented if there was a dialog which said "You're sending this 'prompt' as a live alert to millions of cellphones (yes/no)".

Software always assumes people are paying attention but for serious usecases like this (which can't be undone for example, or sending hundreds of millions) there should be a sanity check dialog with real information.
I couldn't get below 2008. (https://github.com/jRimbault?tab=overview&from=1992-12-01&to...)
And the stogy old men of present grew up in the worm era so worm it is.
That sounds like the "not real communism" argument. "Not real sharia". I would argue that SA is absolutely real sharia, and they have schemes to allow mortgages that function basically like lending but avoid mechanisms that would look like lending for profit by the letter.

The problem with rules against lending for profit is that you have no incentive to let anyone use what you have for their own benefit. If someone comes to me with an awesome business plan and wants some money, if I want to help them I am going to expect them to take the risk on their business plan rather than subject me to it.
Great work today.
true. generally if frequency is greater than 62 Hz or less than 57 Hz generators will be allowed to disconnect immediately to avoid damaging themselves.

Offhand I am not quite sure what the damage from off-nominal frequency operation is though - inductance is jwl - any impedances with a lagging reactive component will vary proportionally with frequency. a decrease in frequency will cause an increase in current. I imagine off-nominal frequency operation causes something to get hot.
Neither Perseverence or SpaceX landings involve latency for control commands, they are automated/preprogrammed in the vehicle and do not rely on real-time commands from the ground.
> I've been loving mycli for the last 4 years or so.

So rewarding to hear this. Cheers!
Wait, haven’t they been moving since 2018?
Didn't they pay the owner off for all of these infringements? I seem to remember that being the case...
This right here. Benefits shouldn't be tied to employer. Pay me more and let me control my money.
Yes, those are all Earth Receive Time, that is, when they were saying that eg. entry interface is two minutes away, in reality the rover was already sitting on the surface and we were just waiting for the radio signal to get here.
At this exact moment, yes (I would think). But that says nothing about tomorrow, or next month. Even if the crypto price stays the same or goes higher, your ROI depends on how many other people are mining and what their hash rate is.

The people that are doing the best right now are almost certainly the ones with fully depreciated equipment.
Drilling in the Arctic Refuge Could Release a Double Dose of Carbon
This is a bizarre rationalization of a misleading post. So what if Chrome has features, some of which you don't care for? That doesn't make the post right.
This doesn't seem that far fetched. Especially since miners don't need to produce full-featured drivers.
Could be still a nice exercise if someone could compute how many Starlinks could a Falcon Heavy throw to Mars transfer orbit & if they could be able to actually capture into Martian orbit by their default means of propulsion (do they actually have any high thrust engines ?).
>I technically have 3 jobs, two unrelated "full-time" SE roles,

You mean to say that you are collecting two paychecks under the pretense of each company thinking you are working full time?
Right. One "proof" advanced by Moon landing conspiracy theorists was that dust settled much faster in videos than it should if it were really in Lunar gravity.
Black-footed Ferret cloned for wildlife conservation
When I learned German on high school, it was allowed to replace umlaut. For example, instead of über, you could say ueber. Ie. effectively replacing the umlaut with its vanilla/plain vowel variant plus an e. You can do the same with ß by replacing it with two s (mind to write it like). Tho I'm not sure its correct German in all German-speaking regions I found Germans would understand me. It being useful as my keyboard layout wasn't qwertz or equiv.
This is why it was a founder that complained about the equity/pay problems, rather than any engineer.

If they actually rewarded their Waze employees with enough equity, the employees would have pushed much harder to not get acquired and been much more upset afterwards. You should be highly suspect of any investor or founder that thinks an acquisition is a successful outcome.

What's clear is that Waze employees finally got compensated fairly, and the founders suddenly didn't have 100x upside. There's a reason it's a founder with the frown at TGIF at Google, and all the employees are excited and smiling.

They're finally getting paid.
Exciting time to be alive!
> In the end the only thing I kick myself for was looking at it objectively. Bitcoin wasting untold amount of energy, low transaction rate, high wait times for confirmation, high transaction fees, ever growing public transaction history, long cryptographic identifiers for receiving and sending, and so on do not actually matter.

As if there's a better alternative.
> I don't have a reference immediately handy, but there was a study done a little before the 2016 elections

A more recent survey of studies looking at single payer healthcare plans found[0]:

"The evidence abounds: A "Medicare for All" single-payer system would guarantee comprehensive coverage to everyone in America and save money.

Christopher Cai and colleagues at three University of California campuses examined 22 studies on the projected cost impact for single-payer health insurance in the United States and reported their findings in a recent paper in PLOS Medicine. Every single study predicted that it would yield net savings over several years. In fact, it’s the only way to rein in health care spending significantly in the U.S.

All of the studies, regardless of ideological orientation, showed that long-term cost savings were likely. Even the Mercatus Center, a right-wing think tank, recently found about $2 trillion in net savings over 10 years from a single-payer Medicare for All system. Most importantly, everyone in America would have high-quality health care coverage."

[0] https://journals.plos.org/plosmedicine/article?id=10.1371/jo...
Data Structure: Linked List
New module changes in Go 1.16
Exactly. There are folders and a trash can on my computer desktop for the same reason.
Doesn’t relativity tell us it doesn’t matter?
...and if they're breaking the license, don't "name and shame"; send them a C&D. And if that's ignored, sue them.

Seriously, there's some attitude in open source circles that looks down on using the law to achieve compliance. Why bother putting up such a carefully thought-out legal document, and then whining on a blog when it's broken, instead of using it for its intended purpose -- a court of law?
You’re skipping permits +construction ~10 years and decommissioning which seems to take 30+ years on average though few have actually finished the process. https://en.wikipedia.org/wiki/Nuclear_decommissioning

75% capacity factor * 50y / (50y + 10y construction + ~30y decommissioning) = 42% capacity factor which is higher than solar but not by that much.

But let’s assume you’re at a 1.5x capacity factor advantage. So 1.5 GW of solar = 1.0 GW of nuclear. 1.5GW / 220w/m2 = 2.9 square miles of panels plus panel spacing and whatever infrastructure is needed. Double it to be really pessimistic and your under 6 square miles.
I got my start in IT as a DBA. SQL and good table design come naturally. So when it came time to join a company as a developer I sprang for raw SQL only to find this SQLalchemy ORM. I couldn’t wrap my head around it at first. All the ceremony to get to what I wanted to do just got in the way. I felt trapped. But it’s ubiquitous and I have to adapt. So I’m learning. And there’s a whole lot of benefit being able to define a model and have it render on any database. Paired with Alembic migrations can be pretty simple.

I miss having 100% control over the queries, knowing exactly how they looked and analyzing each before committing them to main. But nobody has the time to hand craft artisanal queries and leverage every intricate detail of a database when they’re trying to move ever faster and ship features.
nvidia going to learn a lesson.

first, this is very obviously because they noticed cloud operators are offering these RTX cards and they do not have a 10x-the-price-enteprise-quadroRTX yet.

what they think will happen:

they will blame miners for their production issues, make RTX cards less attractive for cloud operators, sell a truck load of quadro cards to them while offloading RTX cards to actual gamers who then generate revenue in other ways (they do not have those free game bundles deals for nothing)

What will happen:

nerf cards, lose sales for gamers and ML startups.

impact production lines even more with multiple models, lose sales for cloud operators.

cause actual miners (not their strawman 'oh the prices are up' for their production issues) to either reverse engineer the drivers, or just keep the old drivers running and buying the now-cheaper RTX cards, compounding the production capacity.

game studios that started to use those features to speed up crowd AI etc will just slap a "AMD Recommended" on their games.
Right. That is clearly the general answer. Ideally - I would like it to be an actual red push button telephone with multiple lines to add complexity to the narrative - but simpler would be a fine start.

Edit: basically - put a game inside this https://share.icloud.com/photos/0IH5hOBO_KECT2gSpzd5-n_4g
what if those people were tested for covid and there was no risk?
Don't know how old you are but it's very likely that your children or their children will get old before fusion energy becomes reality.
(Fixed) Google Cloud us-central1 outage
Description: We are experiencing an issue with Google Compute Engine VM Instance creation in us-central1 beginning at Thursday, 2021-02-18 12:13 US/Pacific.

Our engineering team continues to investigate the issue.

We will provide an update by Thursday, 2021-02-18 14:45 US/Pacific with current details.

Diagnosis: Users may be unable to create new VMs in us-central1, any products that rely on GCE will be impacted by this.

Workaround: None at this time.
He did the monster math and calculated that the frame rate of the universe is 18 septillion FPS.

Let's assume we are already in a game running with this FPS. Could we somehow prove that it's actually a simulation or disprove in the case it's not?
I'd pay extra for green LEDs...
To enable the Unlock with Apple Watch feature, open the Settings app on your iPhone, then look for the “Face ID & Passcode” setting. Once you flip this toggle, your Apple Watch will be able to authenticate your iPhone as long as the following conditions are met:

- Face ID detects a mask
- Your Apple Watch is nearby
- Your Apple Watch is on your wrist
- Your Apple Watch is unlocked
- Your Apple Watch has a passcode enabled

https://9to5mac.com/2021/02/04/iphone-face-id-unlock-apple-w...
*using solar as a power source.

I wish they'd include those important parts in the title.
Time to buy some fanless RAM
email us and we can give you a demo. founders@ontop.ai
and you can check out our page www.ontop.ai. Cheers!
To realize significant political change in America we need to kill Us vs. Them-ism and that means eroding the two-party system. If you can, at a local level, advocate for proportional representation for local elections and you'll see improvements start to grow in naturally since politicians will need to argue for things instead of just against things.
Physical Principles for Scalable Neural Recording [pdf]
Well, no comment on if they're suckers or not, but I think this is a misunderstanding of what a share in a company is. With a share, you own something with actual tangential value, i.e. claim on dividends/voting rights/cash flow/etc. Plus the company itself can actually go and do valuable things and make money - Apple can go and sell a bunch of iPhones and make a ton of money, and then reward their investors through dividends, buybacks, etc. That's not zero sum, there was something of value created and provided to the world. I do understand that in reality many people play the stock market like it's a casino, but that doesn't change the fact that it's still fundamentally different.
Producer prices as well. An acquaintance of mine runs a box factory. His paper suppliers have hiked prices twice since November, and naturally he's going to be passing this (and more) on to his customers.
EVERY US company is legally required to comply with a FISA warrant. Stop acting like Apple has a choice, they don't. And also they are legally considered warrants. Did you read your link?
I'm particularly interested in the support for dataclasses. It's going to make modeling the application while decoupling from the data layer itself easier, I think.
The only people who can enforce the GPL are the people who own the copyright of the code infringed. They may be able to win huge fines, but (with some infamous exceptions) generally aim more for compliance than punishment.
Other posters have pointed out that it's the hazard avoidance camera, but they haven't said why the hazard avoidance camera is black and white.

When you do computer vision, the first step you do is convert your color image into a black and white image, and run your CV algorithms on the black and white image. This is because when you're looking at objects and shapes and stuff, it's contrast that tells you where the boundaries between things are. This is true even in a human world of human objects, which tend to be many colored. It's even more true on Mars where basically everything is varying shades of orange. So having color doesn't help a whole lot, and you also have to do the additional step of converting the color image to black and white, which takes CPU power and adds latency. Remember, the purpose is hazard avoidance- latency is bad.

Additionally, color camera sensors aren't actually color sensors. They're black and white sensors. In front of every pixel on the black and white sensor is a filter that is either red, green, or blue. Pixels are grouped into sets of four, and there are two pixels with green filters, one pixel with a blue filter, and one filter with a red filter. (sometimes one of the green filters is omitted, giving red, green, blue, and b&w, or sometimes one of the green filters is a filter that allows IR, or something like that.) So if you have a 16MP camera, the camera has 8M green, 4M red, and 4M blue pixels. This means two things; first of all, if you just wanted a black and white image in the first place, a color sensor gives less detail than the equivalent black and white sensor, and second, you need to do additional processing to convert the raw output from the sensor into an image that's usable for anything. The additional processing adds latency.
It's more complicated than that when one party has outsized representation because of political tricks like gerrymandering. In the 2020 election, 90% as many people voted for Biden as for Trump. That's still a sizable gap but it's not like Texas is entirely single-party, and definitely not in the way that Wyoming is.

A huge portion of Texans are enduring an artificial catastrophe who did not vote for any of the politicians who caused it. Although I feel bad for everyone going through it, I feel especially bad for them.
Yes, but it's not technically correct to call Martian seismic tremors "earthquakes".

https://www.imdb.com/title/tt0080745/goofs

Flash Gordon (1980) Goofs

At the very beginning of the film, Ming and his henchman are discussing "an obscure body in the SK system", which the inhabitants refer to as the planet "Earth", pronounced as if the word is completely foreign to them. However, at that moment, Ming activates a button on his console labeled "Earth Quake".

http://bobcanada92.blogspot.com/2020/10/flash-gordon-logic.h...
Tether implements chain-swaps by depositing into the treasury account on one chain and withdrawing from the treasury account on the second chain. There is no printing/burning required.

But there is a problem when a large wallet does a chain-swap. These are often exchange wallets with all their user' funds, and there simply isn't enough funds in the target chain treasury wallet.

In these cases, new tokens need to be issued on the target chain. As for the tokens on the old chain, the treasury account just gets really large for a while.

Perhaps they should be burning, but in this bull market, it looks like tether has just taken the approach of waiting and skipping issues until the treasury account gets down to a reasonable level.

Tether document their treasury account balances on their transparency page[1] as
"Less: Authorized but not issued" for each chain. Sure it's horrible that the transparency page is missing anything about real-currency reserve holdings (other than saying "All Tether tokens are backed 100% by Tether's reserves"), but they are quite transparent about all the on-blockchain stuff.

You can also view the treasury accounts directly and view the inflow/outflow. Omni is here[2] and eth is here[3]. etherscan even has a nice 'value over time' graph [4]

[1] https://wallet.tether.to/transparency

[2] https://www.omniexplorer.info/address/1NTMakcgVwQpMdGxRQnFKy...

[3] https://etherscan.io/token/0xdac17f958d2ee523a2206206994597c...

[4] https://etherscan.io/token/0xdac17f958d2ee523a2206206994597c...
> Do I have hope that this disaster will spur changes in policy?

If the past as shown us anything, it is nothing will change unless we can improve things for everybody. We've gotta make sure everybody gets something of value.

Changes have to be made at a local level to improve peoples lives and those improvements need to be advertised in a way that the people know what policies helped them out. Or what policies are hurting them.

Most people here just want lower taxes and more money in their pockets. Yet, they don't realize that while they pay for their share of the state bills plenty of other people/companies aren't.
FYI - the HazCams on Perseverance are in fact in color (this is new, they were black and white on Curiosity)! Stereo precision was a concern based on the switch to color sensors, so there was some algorithmic work done to make sure it wouldn't cause an issue. (Source: https://link.springer.com/article/10.1007/s11214-020-00765-9 - "The Mars 2020 Navcams and Hazcams offer three primary improvements over MER and MSL. The first improvement is an upgrade to a detector with 3-channel, red/green/blue (RGB) color capability that will enable better contextual imaging capabilities than the previous engineering cameras, which only had a black/white capability.")
Evading Twitter Spam Filters
As someone who grew up with the meatball, I can’t fathom why they went back to the worm.

It’s all nostalgia.
Not only the MRO, but other orbiting assets as well, particularly NASA's MAVEN and ESA's TGO. Even the venerable 2001 Mars Odyssey is still used as needed, I think.
It's interesting how they're evading twitter filters. I've already seen this pattern where they make a video of a tweet and then they just add some noise to it.

But now, they are tilting the image slightly, to prevent AI from reading from it. This was my first time seeing this. Really interesting.
It's the latter. The Earth-Mars latency at this time is something like 11 minutes, and the landing itself takes about 7 minutes, so when we on Earth first saw the craft entering atmosphere on Mars, by that time all the landing was already over, one way or another.
There's a lag time in communication due to distance. I don't see what that has to do with relativity.
That's interesting, do you think that SPARC and HTS advancements like for example VIPER cables point towards a faster path to market for fusion than ITER?
I just want to thank you all for the wonderful time tonight, we’ve been watching with the family. Amazing accomplishment!