skysight-inc/HackerNews huggingface dataset:
Systems like that are floor radiant heating using pex water tubes embedded beneath the flooring. Geothermal heatpumps circulate water loops into the ground to dump heat in the summer / grab heat in the winter.

> Heat pump water heater systems typically have higher initial costs than conventional storage water heaters. However, they have lower operating costs, which can offset their higher purchase and installation prices.

That's the key problem. Solar cracked this nut with the PPA -- zero upfront costs because the system is financed, you pay your monthly electric bill through the solar company, and they take a cut of the "operational savings" as loan servicing and profit. However, the PPA was an uphill battle -- it took a while for big finance to be comfortable with the long term performance of solar panels before they became comfortable doing this kind of loans. The big solar companies today are the ones who took a bet on making PPA financing possible.

With home efficiency improvements, however, there are so many more variables. Whereas solar is basically the panel and the inverter, with home heating you need to factor in the construction of the home and a million other variables. If the efficiency paybacks are less predictable, it's harder to finance, so it's harder to overcome the higher upfront costs.
The big issue is timing: hot water, fridge use, and home heating would need to be well synchronized to take advantage of this. I.e. you don't necessarily want to make your fridge colder just because you happen to be heating water. The fridge and temperature is set so your lettuce doesn't freeze and your hamburger says solid. Your water heater turns on because you took a shower. You would need to store the thermal energy (a block of ice, perhaps), but this adds complexity and cost.
I nominate you as the new Secretary of Food Distribution.
It's a fair question; the answer to that doesn't seem to have been communicated yet.

We can speculate as to reasons why: one could be that the authors feel that the decentralised approach is lacking some important feature that could save lives, such as insufficient feedback about how it is being used.

Another could be that they feel that they can implement a solution faster than waiting for Google/Apple to finish their platform and then building something on top of it. This leaves open the possibility of changing tack if the new API is superior.

Or maybe they're just hedging their bets in case the Google/Apple approach doesn't work or gets pulled.

(I'm assuming none of this is a nefarious plot by the government to add to their general surveillance powers. I personally don't think they'd care given the considerable abilities they already reputedly have to track mobiles).
Considering that hot water does not need to be heated right away, solar water heating (Direct or via photo-electric) with an electric hot water cylinder as a backup for overcast days would result in more reliable and more long lasting system.
I think it won't be so bad if only there were some standards. ie. a hot loop, a cold loop.
And appliances can just use the standard sockets to hook into these energy sources/sinks.
My wife will be disappointed, she still uses it regularly.
I have never fundamentally understood sagas and I've tried a few times. I'm able to wrap my head around redux-loop though https://github.com/redux-loop/redux-loop
Interesting that the population of Sweden is comparable to the population of London, England. Two ends of the population density factors.

Yet comparing the number of deaths, they do seem most comparable.

Not sure what to make from it though.
Any suggestions on which they do frequent?
Some of those devices have multiple Ethernet ports which can be bonded.
> we shouldn't be eating as much meat as we do anyway.

This is not universally agreed, and sounds a bit like a modernized version of "let them eat cake."
Cool, so why not set the limit to the heat-death of the universe and be done with it?
Ten minute video by co-author on this:

* https://www.youtube.com/watch?v=JQss0uQUc6o

See also her PhD dissertation, "Distributed consensus revised":

* https://www.cl.cam.ac.uk/techreports/UCAM-CL-TR-935.html
At best, the AC is 140F. Not hot enough to heat 15 gallons of water.

You'll need something complex, like another coil going into the hot water tank from the outside air conditioner, and then the hot water tank is just not big enough to cool the house without loosing efficency. For a home it's impractical.

Might be better to cool off an entire neighborhood, but then you have to bulldoze a couple of homes and build something big that could blow up and take out everyone.
Your focus on the virus spread while ignoring the tens of millions of people who have lost their jobs because of this is selfish and egocentric.

I do not believe there is room for an alternative viewpoint to that.
Educated, rule-following population that values science and logic.

Here we have “Tiger King”
Are you saying memset does not have to write the entire struct? I understand it can be optimized out, but thought it if it was actually executed it had to set all of the specified bytes.
I agree with this! On our last visit to the UK we stopped at Avebury. Aside from touching the stones (and the sheep touching you!), there is a very nice little National Trust museum. Also in the town (all steps away) is Avebury Manor, which was a neat little museum that has different rooms decorated for different periods. There's also St. James Church, which aside from being very historical and interesting, happened to have the group of "church ladies" (which I think was the actual name of their group) who were serving a pot luck lunch for a very small donation, and as it had just started to rain, bent the rules for all of us and let us picnic in the church. Avebury is by far one of our best memories of the trip!
Have you actually used Clojurescript with React? Just any cljs library - Reagent, Rum, Re-frame, Fulcro?
Maybe try it, perhaps then you'd understand why Clojure developers often get confused what problems every new hype cycle in JS/TS world is trying to solve.
Because Clojure idioms often nicely turn them into something you don't have to worry about at all.
I used to think that worked, and at some point it (maybe) did. There were/are also magic strings you can mute.

I think currently your only hope is to use the "latest tweets" timeline, complete with periodically resetting your preference when Twitter decides to change it for you, which is abusive behavior on their part.

I prefer the chrono timeline and no "likes are stochastic retweets" nonsense, so that's a happy convergence for me. Who knows how long it'll last; Twitter seems to despise their users and I'm quite convinced no one in power at the company actually uses the platform.
"Please don't post shallow dismissals, especially of other people's work. A good critical comment teaches us something."

https://news.ycombinator.com/newsguidelines.html

Paywall complaints are off topic:

https://news.ycombinator.com/newsfaq.html

https://hn.algolia.com/?dateRange=all&page=0&prefix=false&qu...

https://news.ycombinator.com/item?id=10178989

If there's a workaround, it's ok. Users usually post workarounds in the thread. There's one in this thread.
> with fairly well understood vulnerabilities to various parts of the population.

I don't think the virus is as well understood as you believe, which is why opening back up now may be premature.

Regardless, the riskiest pre-existing conditions appear to be obesity and hypertension. 57-75% of Americans are obese according to the dedicated Wikipedia page. Also bear in mind there is considerable variance among obesity rates per locale. What's the CFR in obese patients?

Edit: if you can't tell me the CFR in obese patients, you shouldn't be rushing to open everything back up. I don't know why people are silently downvoting but there is nothing incorrect or inconsistent about my comment and I'm just making a suggestion based on what little evidence exists.
The reddit hive mind has become terrifying. It has seriously had a tangible effect on my faith in humanity.

I never got onto Twitter but I assume it's about the same.
Amusingly, I had the old "Numerical Recipes" before there were versions for the different languages. Since I was writing in BASIC and then Pascal, I had no hope but to re-write the code myself anyway, and I couldn't afford to update when the new editions came out.

Not too long ago, a colleague asked me if I had a good code for linear regression, and I sent him a copy of the page from my undergraduate data analysis textbook, which had it in FORTRAN IV.
No, not joking at all. It's actually a fair amount of work to find good links. While I make a point to not submit stories, the people with the most karma on the site, and those who accumulate it the fastest, gain most of it from comments. Getting stories upvoted is fairly random in comparison; there are a couple (I a particular user in my mind right now) that make this work by submitting like a dozen stories a day, getting 1-2 points on most of them, and then a hundred or so about once a day, but that's not really any worse than commenting because stories don't map one-to-one with karma.

(I should mention that if I don't actively optimize for karma; I exclusively skim threads on the front page for a while and leave comments, coming back a couple times to catch new additions and respond to replies. If you're really trying to rack up karma and can can string a couple of words together on a variety of topics, there's a number of more aggressive karma accumulation strategies you could employ. They're not nearly as enjoyable.)
Common mistakes lovers make while in relationship – Yawabase
I can imagine having modular heat sinks apart from the heat pumps which your various household heat pumps could tap into: a warmth sink your cooling devices dump to and warming devices draw from; a coolth sink that does the reverse. It would likely be expensive and you'd need a way to dump the surplus of either outside the building, but I don't imagine there would be much maintenance cost. You wouldn't need moving parts, just a liquid to move heat quickly within the sink via convection. Or maybe a chunk of aluminum would do.
Are the original notebooks online?
They are taking ownership of the idea of May the 4th. If this seems ridiculous, then don’t look at Disney’s business model. They dish out billions to buy the rights to ideas as flimsy as this one.
I'm not aware of any lockdowns which are specifically targeted at small retailers while competing large retailers are allowed to be open. Where I am the small coffee shops are closed for walk-in business, but so are the Starbucks; the difference is that small coffee shops are not able to pivot to a centralized delivery platform en masse the way Starbucks is.
One of two things:

1) No one complains, Disney uses the content and life goes on.

2) Someone complains, Disney takes that tweet down and replaces it with a different tweet and life goes on.

Disney is not going to court over a tweet. They'll just take it down if someone complains.

Also, under copyright law Disney will not "own" any of the IP in these tweets, the question is whether they have a license to use it.
Ok so 50,000, maybe 60,000 but I think the point about Sweden having a higher per capita death rate stands at this point. Sure, in a week these numbers may change but based on the current numbers I think it is not controversial.
Keep in mind that this book was written in USA
Various data points. This is an upper bound, more calculated for Santa Clara county.

International comparisons to lockdown level and case count changes.

Assuming serial interval of 4 and > 10x non-detection rate on March 31 and 3x now gives you this.

Knowing people were dying if the disease in early February implies very high lack of detection when SIP was in place. (Likely over 800 infections a day when Santa Clara activated SIP)

Edit: More detailed explanation above.
Seems like we will need more Fed dollars flowing. Seems like recovery is going to be slow with more pain to come.
I think that’s why heat pump water heaters are particularly popular in places that predominantly have A/C loads.

In cold country, the « inefficiency » of resistive/combustion hot water heating is still household heat. Just pricier/less efficient than your (typically) natural gas furnace.
MIMO is in common use since 802.11n, it's what "3x3" spacial streams is.

MU-MIMO, "multi-user MIMO", is what was added in 802.11ac but never gained significant support or usage. (You'll find it in some WiFi APs, but practically no WiFi clients, I've never seen one myself.)
I like the idea but I can't find a brand that I'd trust in this day and age. Whiteware goods used to last 20yrs, or people expected them to. Nowadays 5yrs warranty seems to be the timeline they're expecting people to accept.

Heatpump water heater will save energy, but more parts to break. I'm sure it can be engineered to be reliable, just not sure by whom...
Disney's response to the backlash was:

Yah, but WE'RE DISNEY
Yes, as mentioned, it's regardless of what kind of connection I'm on.
Yeah, you often send commands several beats in advance. And then there's some lag too, because muscles are fairly viscous and take a bit of time to start up. You're basically dancing in the future, because you are behind. I think we just run pre-baked programs (from a lot of practice) and adjust their timings on the fly every few beats or a bar.
JS is one of the most un-opinionated, flexible language around, I do not believe there is a one true way™ of doing JS. For example, React and Angular have very different approaches (functional vs OPP) on how to JS.

I do agree that having something do a different thing depending on where and when can be counter-intuitive.
Not just any tax, but a wealth tax affecting anybody who has US dollars, regardless of their citizenship or location.
That is pretty clever. I agree with the authors that it will be really challenging to build one to many tranceivers in the THz spectrum, a thousand little masers all shooting out isn't exactly comforting for the folks with a fear of electromagnetic radiation.
> 1) Schools are about to be done for the academic year, so they're effectively shut down until August anyway. It wouldn't make sense to re-open schools for less than a month.

Though it could make sense to re-open them a month early, health concerns permitting. They already got a "summer break" and can make up for lost time
Yup. Sadly, our politicians care more about getting re-elected than doing what's right for society.
I think the most important thing we're waiting for is adequate testing levels.
Yep, we just got burned by it. Terrible money-grabbing decision by Atlassian to hold administrative configuration and accounts behind a paywall.
No, they didn't. In Roe v. Wade they made up a legal test which they can do, and they interpreted existing laws in terms of their constitutionality. However, as far as I can tell that's not what's happening here. They just took a law that applies to the judiciary and said "yah, that applies to the legislature too now". Again, not a lawyer, so the way in which they reached their outcome may not be as bad as it seems to me since I don't really have the knowledge to evaluate it properly. Just because the decision is good though doesn't mean it doesn't have other bad consequences.
So glad I made the decision to be born after 1970. At the time all my friends said I was crazy but it really paid off.
You and the parent posters are assuming that everyone lives on their own and that younger people don't live with or take care of older people. Once things open up, employers will expect younger employees to show up. Couple that with asymptomatic transmission, how do you practice social distancing in a closed home?
Tracking email opens allows senders to gauge engagement with sends, giving them feedback such as non-engaged users. When users don't engage with the emails, inboxes can penalize the senders. By having open data, it helps senders trim off non-engaged users to keep their mail relevant for interested recipients.

Genuine question: what's the bad part of tracking opens? The only thing I can think of is "I just don't want them to know I opened it." Which, I guess is fair. But in the current email landscape, that means inboxes like Gmail may start sending more legit mail to spam boxes due to bad engagement metrics on their end.
This is the weirdest article I’ve read in a long time. Essentially zero content, 90% of the article isn’t about what they are actually suggesting. It’s written to convince me that these are very fine people who even sold their stocks before advising the government! Wow! The poor guys read 10 Papers per day, they couldn’t even shower. And after all this work, they suggest an app and better testing! Ah, and Remdesivir. Good that they thought of that, wouldn’t know what to do otherwise I guess. Is this paid advertisement or what’s the deal?
Is there a statute somewhere that requires London Breed to spell anything out to your satisfaction? I don't know what California's emergency management laws look like; maybe you're right.
Ok, we've changed the URL to that from https://investors.micron.com/news-releases/news-release-deta....
IMAO hooks are just a dirty hack, but sold very well. Internally in React the state of a hook is being kept and updated when you call the set function, kinda similar to vtables and context in OOP. There is no other way to do this AFAIK. It only mimics functional programming, and that's why you see the restrictions about hooks, you cannot use them outside React, cannot nest, etc..
I think that the government agency in charge of the shutdown should be able to answer each of three basic questions with clarity and some kind of numerical response:

1) What are you hoping this policy will accomplish?

2) What sequence of events, if any, would cause you to accelerate your timetable for easing restrictions?

3) What sequence of events, if any, would cause you to delay your timetable for easing restrictions?

I mean those should be the raw basic cost of even having this conversation. I am used to seeing magical thinking and emotional political arguments in many places but I am surprised to see such hostility to a basic quantitative approach on HN of all places.
Ah I see - that makes sense in retrospect! Not at the time though haha
The last rounds of major public (or notionally public) buildouts of infrastructure where profits be damned were funded by the feds, because the states and localities do not have the financial resources to add this along to whatever else they are currently funding, and even if they did you'd see a patchwork that mostly fails the truly underserved.

This is extremely unlikely due to the current administration.
To a TCP implementation, what's the difference between a dropped packet and one that's delayed by hundreds of round trip times? What problems are caused by not dropping that packet?

(If all the packets are failing to go through for that long, then you have much bigger problems than the error correction.)
they just released the code for the Imperial model that the UK apparently uses

https://github.com/mrc-ide/covid-sim

Seems like a game of simcity, honestly. With so many parameters that are not very precisely known, it's easy to go into fantasyland. On second look, this model has not been used to reproduce the epidemiology of a previous , real world infection. weird

i think you re more likely to get accurate predictions with typical SEIR models

BTW this is the model the US uses (i think): https://www.medrxiv.org/content/10.1101/2020.03.27.20043752v...

It's statistical in nature, so closer to real world
Presumably the ability to serve HTTP on ports 80 and 443 would be sufficient.
The difference between Newton and Leibniz seems remarkably similar to the difference between say: Einstein and Feynman. One seems to be discovering the maths while the other seems to be forging it. Personally, I prefer and understand the forged methodology better myself, but then again I have always been a tinkerer.
I also think this also depends on when you signed up for gmail. my gmail account is pretty old, no ads, with no ad-blocker. but my gf's gmail account is littered with ads & I would assume my burner accounts too, if I didn't use a an ad-blocker.
"In future, please don't forget to cool off the tea."

There's an entire WP page on these differences that are pretty interesting.

https://en.wikipedia.org/wiki/American_and_British_English_g...

As always, your local dialect may differ!
Whatever the effects are, what do you think three months of lockdown and closed gyms will do to the obesity rate?
Rum and Reagent added support for hooks mainly for compatibility. Never needed them before.
He says in the second article you link that he doesn’t think hotlinking is bad per se, especially when it’s done in support of knowledge and education.

I think the moral is rather that hotlinking is dangerous.
Can anyone suggest a serialization format that can be implemented across languages without being a language lawyer?

JSON seems like it fits the bill but I have seen soooo many complaints about UNICODE encodings, whitespace or some other things, and people saying secure scuttlebutt suxx because it relies on perfectly copying Node’s JSON implementation. But dudes, what format is better out there?
> Why aren't there integrated systems for heating/cooling? (Or maybe this exists and I just don't know the proper terms to search for)

There are some cases where such integration can be achieved through clever design (i.e. a heat pump water heater that dumps cold air on an adjacent warm kitchen), but many times the loads of the heating/cooling use cases don't match up well either in magnitude or timing.

A pool pump is an interesting example where the pool likely has enough thermal mass to absorb the heat from a house via a heat pump, although at some point the pool would likely get too hot after days of repeated heating, since it would hold on to heat longer than the adjacent house, so it would
only make more sense in areas with large day/night variations in temperature, like in high deserts.
I thought Jordan Walke created React, not Sebastian Markbåge, in which case he already moved on (to ReasonML)
https://news.ycombinator.com/item?id=22990793
Ah correct, I did misuse it. Thank you.
To free or not to free memory (C)
I can speak to a few examples specifically. It's planting season now, and high business for nurseries. In Santa Clara County, they're closed by fiat. Lowe's, Home Depot, ACE hardware sell essential things (plumbing supplies, etc), so they get to remain open, in-store nurseries and all. So, if I want tomatoes, I have to brave the crowds at Lowe's instead of hopping out to my local nursery which is rarely densely populated even in good times.
I visited a house years back that captured back hot water heat from the shower drain. Hot water going down the drain went through a pipe wrapped with a spiral pattern of other pipe (and fresh water from the hot water tank circulated through there). Don't know how efficient it was, but it was pretty cool to see as a working system.
Even ignoring the rest of your logic - replies are different from mentions and can be inferred only by context of the tweet and not simply the presence of @disney in the tweet.