I built a web interface for this type of nurse scheduling optimization. Mine uses CPLEX instead of the CP-SAT solver but the Python set up is very similar.
Scott Alexander of Slatestarcodex provided some anecdotal evidence of this issue last year:
> Last month I moved into a small cottage behind a big group house. The cottage is lovely. The big group house is also lovely, but the people in it started suffering mysterious minor ailments. Headaches, fatigue, poor sleep – all the things that will make your local family doctor say “Take two placebo and call me in the morning”. Using my years of medical training and expertise, I was able to…remain completely unaware of the problem while my housemates solved it themselves.
> Aware of this research, my housemates tested their air quality and got levels between 1000 and 3000 ppm, around the level of the worst high-CO2 conditions in the studies. They started leaving their windows open and buying industrial quantities of succulent plants, and the problems mostly disappeared. Since then they’ve spread the word to other people we know afflicted with mysterious fatigue, some of whom have also noticed positive results.
Why would you use Monica at a start-up or Fortune 500 company? I had assumed that Monica was purely for personal use. It never occurred to me that a start-up, much less a Fortune 500 company, would use Monica for anything.
I've been using Monica for a couple of years now and I'm very happy with it for my personal network. It's a great tool to remind me who is connected to whom and what to ask about before attending a party. The online version is here: https://app.monicahq.com/register
In 100 years will we wonder why recumbent bicycles took so long to catch on? MIT's David Gordon Wilson, the writer of the excellent book Bicycling Science, had been advocating for recumbents as a more efficient design to replace traditional modern bicycles for decades.
This article was published around 1999. Russel Ackoff mentions he is 80 in the article and he died in 2009 at the age of 90. The Systems Thinker started in the 1980s and discontinued publication in 2013.
https://thesystemsthinker.com/about/
After reading this, I got a Netatmo CO2 monitor like Scott and Gwern. I found that CO2 peaked in my bedroom at around 1500 PPM at 6 AM with the door closed and that I could keep it under 500 PPM with the door open or a window open.
Scott Alexander also suggests getting around 10 succulents, if you don't want to open a door or a window.
The elderly are generally more susceptible to internet fraud. Last summer the New Yorker had this story about how an 85 year old was scammed out of her life savings:
This is identical to how all other phone OS vendors work where the OS vendor pre-installs apps as part of their ecosystem. If you consider them crapware, then there are no major mobile OS vendors who don't install crapware.
iPhone preinstalls 42 apps, not all of which can be easily deleted: App Store, Calculator, Calendar, Camera, Clock, Compass, Contacts, FaceTime, Files, Find My Friends, Find My iPhone, Game Center, Health, Home, iBooks, iCloud Drive, iMovie, iTunes Store, iTunes U, Keynote, Mail, Maps, Messages, Music, News, Notes, Numbers, Pages, Passbook, Phone, Photos, Podcasts, Reminders, Safari, Settings, Stocks, Tips, TV, Videos, Voice Memos, Wallet, Watch, Weather
Android comes with 29 preinstalled apps, and like iPhone some of them cannot be easily deleted: Android Pay, Calculator, Calendar, Camera, Chrome, Clock, Contacts, Docs, Downloads, Drive, Duo, Gmail, Google, Google+, Keep, Maps, Messages, News & Weather, Phone, Photos, Play Books, Play Games, Play Movies & TV, Play Music, Play Store, Settings, Sheets, Slides, YouTube
All phones have undeletable apps provided by their manufacturers. For example, on iPhones you cannot delete Messages, Phone, Safari, Clock, Photos, Health, App Store, and Camera in a conventional way.
Like the iPhones, phones distributed by Google, starting with the Google Phone G1 in 2008, and continuing to the Nexus phones and today's current Pixel phones (Pixel 1, 2, and 3), have never had crapware.
Your Voyager 1 graph [footnote 0, in the parent comment] shows two periods of particles-per-second drops to around 10 particles per second followed by a rebound and then a dramatic drop to 2 to 3 particles per second.
The Voyager 2 graph [footnote 2, in the parent comment] shows a single drop to around 17 to 18 particles per second and what looks like the beginning of a rebound. Wouldn't interstellar space be characterized by the drop to below 3 particles per second?
Is this the same issue we had with Voyager 1 where Voyager 2 is beginning the process of entering interstellar space but has not yet actually entered it? If not, why are the particle counts about an order-of-magnitude higher for Voyager 2 then they were for Voyager 1 in interstellar space?
> Princeton physicist J. Richard Gott III has an all-purpose method for estimating how long things will last. In particular, he has estimated that, with 95% confidence, humans are going to be around at least fifty-one hundred years, but less than 7.8 million years. Gott calls his procedure the Copernican method, a reference to Copernicus' observation that there is nothing special about the place of the earth in the universe. Not being special plays a key role in Gott's method.
The Air Quality Index / Cigarette equivalence is based on the increased number of deaths from each.
One cigarette is equivalent to an air pollution of 22 μg/m3 for one day. Thus, an AQI of Particles (PM2.5) of 160 (today in San Francisco) is equal to 160 / 22 = about 7 cigarettes.
Here's the web interface to the nurse scheduler: https://forio.com/app/showcase/nurse-scheduling/
and here are some other optimization examples: https://forio.com/products/epicenter/example-applications/