jkeisling/hacker-news-corpus-2007-2022 huggingface dataset:
Ask HN: Always on low power home server
I'd like to build a low power (ideally fanless) server for home automation, data logging, etc, (possibly) pihole, and kodi server, etc running Linux. I've used Rpi in the past, but the sd cards wear out/go bad and I inevitably have to rebuild. Is there a low power/cost way of having a SBC paired with an SSD, or an alternative solution that anyone could recommend?
MMO xkcd WebSockets fixed by PubNub
http://www.pubnub.com/static/pubnub-xkcd/index.html
Hello all hackers from HackerNews. We notice a new MMO was released by n01se and xkcd yesterday (September 26th, 2012) with multiple users flying around with a balloon figure. If you got stuck, you can click your balloon guy and turn into a ghost to seamlessly move through the landscape unhindered by mortal barriers like trees and hills. There was a problem however with the scaling of users on the system. The max concurrency could only be 20 users at a time leaving many wonder where the MMO part of the MMO was. We ripped out the non-scaling Node.JS code. ENJOY.

Enter the xkcd World with Friends: http://www.pubnub.com/static/pubnub-xkcd/index.html
Baidu Research Announces Breakthrough in Simultaneous Translation
https://simultrans-demo.github.io/
We are excited to announce STACL, the first simultaneous translation system w/ integrated anticipation & controllable latency. This is a major breakthrough in #NLP due to word order differences between languages and simultaneity requirement. Demo & paper: https://bit.ly/2yTCvjE
Show HN: Yboard is a multiplayer desktop-like workspace based on CRDT
https://github.com/felipeleivav/yboard
I've always been curious about real-time multiplayer user interfaces.

When I found out about CRDTs and Yjs[1] I thought they could serve as a solid base for a project like that.

So I built this pretty simple desktop-like UI (heavily inspired by lifeat.io) and used Yjs to replicate the whole UI state among multiple peers, creating the experience of a unique interface.

Try online: https://yboard.lol

[1]: https://github.com/yjs/yjs
Show HN: Quake 1 ported to the Apple Watch
https://github.com/MyOwnClone/quake_watch
I ported Quake 1 to the Apple Watch, building on top of existing ports for iOS and Mac.

Some features:
* uses Quake SW renderer + blitting to WatchKit surface (~60 fps, 640x480, larger res can run on lower framerate, tested up until 1024x768)
* touch + gyro + digital crown controls
* new AVFoundation audio backend (quake to Watchkit audio buffer copy logic), as Watchkit does not support CoreAudio
* high pass audio filter to remove clicking on Watch speaker for some of the low frequency quake .wav samples
* some smaller modifications and code updates to glue Quake 1 c code to Objective C and Watchkit

https://www.youtube.com/watch?v=cPC2o262TfQ
Ask HN: Neurodiversity/ADHD Friendly Companies
I'm ~40yo semi-successful full-stack engineer/hacker who had been recently diagnosed with ADHD (after more than decade of self-seeking journey and introspection). During my diagnosis I learned that ADHD is persistent in 5-7% in general population with some specialist speculating it's more common in IT due to hypnotizing effect of computers. I know I'm not alone with this :)

In hindsight ADHD helped me to get into current position. Being constantly bored, high energy, positive-minded solution and tool seeker is often good thing in times of crisis. When things go stale and there are no things to fix but only boring forms remains it's usually mortal battle with burnout, procrastination, self-doubt. One which usually ends with me quitting due to burnout or - rarely - getting kicked off because the next more boring thing took longer than anticipated.

Right now I'm on hiatus since couple last couple of weeks, but lack of direction and purpose is awful and with every morning I feel fires of restlessness growing.

Today I read recruitment ad about neurodiversity program which - supposedly - caters people with different neurodivergencies. Those were US on-site positions though and I'm in EU.

So getting to the point:
Do you know / can recommend companies with neurodiversity programs?

For myself obviously I'm looking for remote or EU companies (with relocation) but even if you know something that's not in the region please feel free to contribute - maybe someone else looking will make use of it.

Obvious throwaway. Some half-truths embedded.
Google Photos API
https://developers.google.com/photos
Use the Google Photos API to build smarter photo and video features for your product.

Developer site: https://developers.google.com/photos

With the API you can help users transfer, share and bring their content into your app more easily (including features like auto-organized categories and creating link-shareable albums).

API is now launched to General Availability, with official client libraries and sample apps for Java & PHP (and more in the works!).

Large app integrations are also encouraged to join the Google Photos Partner Program. Check the developer site for more info.
Google Labs no more
http://labs.google.com
No more cool apps that we can browse via google labs
Scaling Reddit from 1 Million to 1 Billion – Pitfalls and Lessons [video]
http://www.infoq.com/presentations/scaling-reddit
Jeremy Edberg shares some of the lessons learned scaling Reddit, advising on pitfalls to avoid.
Show HN: EnvKey 2.0 – End-To-End Encrypted Environments (now open source)
https://v2.envkey.com/
Hey HN,

I'm so happy to finally show you all this release after years of hard work. I posted the first version of EnvKey to HN back in 2017 (https://news.ycombinator.com/item?id=15330757), then went through YC in W18 (https://news.ycombinator.com/item?id=16569534).

EnvKey is an end-to-end encrypted configuration and secrets manager. It protects your organization's API keys, encryption keys, credentials, and other secrets, and makes it easy to run servers, scripts, tests, and everything else with the latest config. It also helps you avoid duplication in your configuration, react to environment updates in real-time, resolve conflicts smoothly, and a lot more.

You get an intuitive, spreadsheet-like UI for managing environments, along with a developer-friendly CLI that does almost anything the UI can. Running any program in any language with the latest environment variables is as simple as:

envkey-source -- any-shell-command

You can use the `es` alias to type less:

es -- any-shell-command

You can automatically reload a process whenever there's a change using the -w flag:

es -w -- ./start-server

To avoid downtime on reloads, add the --rolling flag to reload gradually across all connected processes:

es -w --rolling -- ./start-server

You can run custom logic when there's a change instead of restarting:

es -r ./reload-env.sh -- ./start-server

Or run something only when there's a change:

es -r ./env-change-hook.sh

You can pass command line arguments from EnvKey variables (just wrap your command in single quotes):

es 'curl https://$HOST_URL'

You can export your environment to the current shell:

eval "$(es)"

Or auto-load the latest environment in any EnvKey-enabled directory (like direnv):

echo $'\n\neval "$(es --hook bash)"\n' >> ~/.bash_profile

EnvKey is now open source under the MIT license and can be self-hosted. Our Cloud and Enterprise Self-Hosted products also include commercially licensed server-side extensions for auto-scaling, highly available infrastructure and advanced user management. Cloud is free for up to 20 user devices and 40 server keys.

EnvKey's client-side end-to-end encryption is built with the NaCl crypto library. Whether you use EnvKey Cloud or host EnvKey yourself, no configuration or secrets are ever sent to the host running EnvKey in plaintext. Public keys are verified by a web of trust. Invitations are verified out-of-band. Secrets are never accessed through a web browser. More details on security and encryption can be found here: https://docs-v2.envkey.com/docs/security

Let me know what you think! Thanks!
Who is living off their startup fulltime?
I'm curious who is currently living off their startup? Self-sustaining or through funding? Also, if you are a link?
Problem with Buffer’s Analytics (And How to Fix It)
http://spinnakr.com/blog/social-media-2/2012/10/the-curious-problem-with-buffers-analytics-and-how-to-fix-it/
An Epidemic is Killing the Bats
http://www.popularmechanics.com/science/health/the-race-to-save-the-bats?click=pp
Why we are so bad at loving our gadgets
http://unioncy.com/blog/posts/50-this-is-an-awakening-why-we-are-so-bad-at-loving-our-gadgets
Enterprise 'Chat Roulette': Planning For Unplanned Collaboration 
http://telecomdisruption.blogspot.com/2010/04/enterprise-chat-roulette-planning-for.html
ASP.NET MVC: Using jQuery context menu with tables
http://weblogs.asp.net/gunnarpeipman/archive/2010/05/22/asp-net-mvc-using-jquery-context-menu-with-tables.aspx
Samsung Free the TV Challenge. (TV Apps)
http://www.freethetvchallenge.com/
The Dangers Of Crowdsourcing For Image Moderation
http://www.webpurify.com/blog/the-dangers-of-crowdsourcing-for-image-moderation/
Commentary on the Haskell Log Analysis Screencast
http://softwaresimply.blogspot.com/2010/06/log-analysis-commentary.html
What’s Best Buy’s Future?
http://blogs.rheti.com/?p=34
We should all do a start-up project and change the world
http://madebymany.com/blog/experience-shift
User Experience Applied: How to Realistically Fix Our Two-Party Voting Process
http://rocksaucestudios.com/tapsauce/post/user-experience-applied-how-to-somewhat-realistically-fix-our-two-party-voting-process/
"Most iPhone users love AT&T" ...courtesy 'Reality Distortion Field'?
http://money.cnn.com/2010/07/23/technology/iphone_4_att/index.htm
Zillow's second letter about McMansion Hell is still wrong
https://www.techdirt.com/articles/20170628/01531037682/zillow-still-doesnt-get-it-second-letter-about-mcmansion-hell-is-still-just-wrong.shtml
BeyondCorp: How Google Ditched VPNs for Remote Employee Access
https://thenewstack.io/beyondcorp-google-ditched-virtual-private-networking-internal-applications/?_lrsc=736ef0f1-9e4b-4970-81fc-82957c3e6c0f
King – Man + Woman = King?
https://medium.com/p/king-man-woman-king-9a7fd2935a85
Why Children Aren't Behaving and What We Can Do About It
https://www.npr.org/sections/ed/2018/06/02/611082566/why-children-arent-behaving-and-what-you-can-do-about-it
Building a working game of Tetris in Conway's Game of Life
https://codegolf.stackexchange.com/q/11880/4881
Amazon raises minimum wage to $15 for all US employees
https://www.cnbc.com/2018/10/02/amazon-raises-minimum-wage-to-15-for-all-us-employees.html
Coffee Is Hard
https://www.stilldrinking.org/coffee-is-hard
Copilot regurgitating Quake code, including sweary comments
https://twitter.com/mitsuhiko/status/1410886329924194309
Future foods: What will we be eating in 20 years' time?
http://www.bbc.co.uk/news/magazine-18813075
Links to create startup pre-launch page
http://www.quora.com/Vinicius-Melo/Links-to-create-startup-pre-launch-page
Spain's state-run railway will launch startup incubator
https://novobrief.com/renfe-startup-incubator-accelerator-wayra/
A Transaction’s Journey Through Brex
https://medium.com/brexeng/a-transactions-journey-through-brex-dba29b8bcd11
Apocalypse Soon?
http://pss.sagepub.com/content/22/1/34
ReSharper: Reflections on recent news
http://blogs.jetbrains.com/dotnet/2011/02/reflections-on-recent-news/
Fix Indents in Indented Languages Like SASS, Pug, CoffeeScript, Haskell, Etc.
https://github.com/askucher/fix-indents
UNIQUE ONE-The world’s first custom-design 3D printer with 3D interface
https://www.youtube.com/watch?v=_nGOahHdnRY
Apple set to acquire Path
http://pando.com/2014/09/09/source-apple-set-to-acquire-path-in-an-attempt-to-bolster-ios-social-cred
Novavax publishes positive efficacy data for its Covid-19 vaccine
https://www.gov.uk/government/news/novavax-publishes-positive-efficacy-data-for-its-covid-19-vaccine
Dear Silicon Valley: Please Come Fix Health Care
http://www.pharmacytimes.com/contributor/alex-evans-pharmd-cgp/2017/07/dear-silicon-valley-please-come-fix-health-care
Oculus acquires yet another VR hand-tracking company
http://www.theverge.com/2015/7/16/8977295/oculus-acquire-pebbles-interfaces-hand-tracking-virtual-reality
How engineers create artificial sounds to fool us
http://news.bbc.co.uk/1/hi/programmes/click_online/9533769.stm
Forget Google and Boston Dynamics – robotics has its first unicorn
https://medium.com/silicon-valley-robotics/robotics-has-its-first-unicorn-small-sf-startup-cruise-automation-11b3ab16aeb1#.wh37ps8ll
Current List of Freediving Records (2021)
https://thesaltsirens.com/current-freediving-records/
Weekly Innovation Update – Your ultimate innovation summary
http://innovationupdate.goweekly.co
Universities Pile on Faculty Perks as Student Costs Grow
http://www.bloomberg.com/news/2013-03-12/universities-pile-on-faculty-perks-as-student-costs-grow.html
DeepStack: Expert-level artificial intelligence in heads-up no-limit poker
http://science.sciencemag.org/content/early/2017/03/01/science.aam6960?rss=1
What an Engineer Looks Like
https://andela.com/blog/engineer-looks-like/
Show HN: Usersnap Redesign
http://thecapcan.com/portfolio_page/usersnap-case-study/
Commercializing Technology: A Need For More Entrepreneurs
http://www.collegemogul.com/content/commercializing-technology-need-more-entrepreneurs
Design for Testability – The True Story 
http://www.infoq.com/articles/Testability
Hackerne.ws DNS temporarily broken
http://opensourceandhackystuff.blogspot.com/2012/01/hackernews-dns-temporarily-broken.html
Iconic Figures – Malcolm Kirk: Photographs
http://malcolmkirk.com/images/gallery/1
Protecting Chrome users from malicious extensions
http://chrome.blogspot.se/2014/05/protecting-chrome-users-from-malicious.html
Google Changed Its Logo This Weekend and You Didn't Even Notice
http://gizmodo.com/google-changed-its-logo-this-weekend-and-you-didnt-even-1582005359
Experimentation in a Ridesharing Marketplace (Part 1)
https://eng.lyft.com/experimentation-in-a-ridesharing-marketplace-b39db027a66e#.g3vlgha0t
Sketch in 3D
https://www.umake.xyz/
The Sims Social: A Love Letter from a Computer Virus
http://www.actionbutton.net/?p=1076
To all entrepreneurs, because we share this dream
https://www.linkedin.com/pulse/open-letter-entrepreneurs-from-younger-self-pradeep-sharma/?published=t
DHL's e-commerce offering for Africa
https://www.iafrikan.com/2019/05/30/dhl-africa-eshop-e-commerce/
East Palo Alto: Life on the Other Side of Silicon Valley's Tracks
http://www.cnet.com/news/east-palo-alto-life-on-the-other-side-of-silicon-valleys-tracks/
How to Structure Your Startup to Avoid Double Taxation
http://mashable.com/2012/02/09/business-incorporation-taxes/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+Mashable+%28Mashable%29&utm_content=Google+Reader
A Layman's Intro to Heraldry
https://quariety.com/2018/05/05/a-laymans-intro-to-heraldry/
9 Quick Tips About npm
http://blog.ponyfoo.com/2013/12/14/9-quick-tips-about-npm
Spell check your Erlang code with Sheldon
https://medium.com/erlang-battleground/spell-check-your-erlang-code-with-sheldon-b60e1bb648e5
Facebook is simulating users’ bad behavior using AI
https://www.theverge.com/2020/7/23/21333854/facebook-ai-simulation-bad-behavior-ww-web-base-simulator
Tablets for Schools – But Who Pays?
http://www.tabletsforschools.co.uk/tablets-for-schools-but-who-pays/
Elon Musk sold all 20K Boring flamethrowers, bringing in $10M
https://techcrunch.com/2018/01/31/elon-musk-sold-all-20k-boring-flamethrowers-bringing-in-10m/
Blood test finds toxic Alzheimer's proteins
http://www.bbc.com/news/health-42878721
Node.js and Ethereum seed starter project
https://github.com/CelsiusNetwork/EthereumNodeProxyViaAuth0
God enough: We should see the ceaseless creativity of nature as sacred
http://www.salon.com/env/atoms_eden/2008/11/19/stuart_kauffman/print.html
Increase your worth as freelancer by providing value, not indulging in price war
https://freelancemag.blogspot.com/2019/05/increase-your-worth-as-freelancer-by.html
Uber's offering private jets for the rich kids of Cannes
http://www.engadget.com/2014/05/12/uber-jet-cannes-film-festival/
New Microsoft Chief Sets Sail for China
http://techonomy.com/2014/09/new-microsoft-chief-sets-sail-china/
Born in First Place (vs the 10,000 hour rule)
http://www.skeptic.com/eskeptic/13-08-14/#feature
CryptoCoinJS
http://cryptocoinjs.com/
University of the People
https://www.uopeople.edu
Covid: Musk 'likely has moderate case,' can't attend today's SpaceX launch
https://www.bbc.com/news/world-us-canada-54948005
Show HN: A console Twitter client for displaying tweets from Twitter lists
https://github.com/esell/twitterMon
An overview of automatic living styleguide generators
https://github.com/davidhund/styleguide-generators
Apple’s Maps being updated often and significantly
http://www.loopinsight.com/2013/03/12/apples-maps-being-updated-often-and-significantly/
The Liquid Bit token presale has been started. It's time to grab an L-BIT stash
https://l-bit.net/presale
How Does GPS Know Where You Are?
http://mashable.com/2012/11/16/gps/
Two powerful female founders who are changing the interior design space
https://medium.com/the-pitch/two-powerful-female-founders-who-are-changing-the-interior-design-space-forever-d0976d9da270
Making logic gates with DNA and light
http://www.eurekalert.org/pub_releases/2010-05/du-dcb051110.php
The Chaos of a Creator
https://blog.polywork.com/the-chaos-of-a-creator/
Teen pregnancy campaign shocks with images of pregnant boys
http://stream.aljazeera.com/story/201305201859-0022767
ICIJ releases Panama Papers data as Neo4j dump
https://offshoreleaks.icij.org/pages/database#_ga=1.252022669.568451658.1462350610
FCC Backs Net Neutrality, Chairman's Full Speech Posted
http://yro.slashdot.org/story/09/09/21/1730208/FCC-Backs-Net-Neutrality-Chairmans-Full-Speech-Posted
New Jupyter evasive delivery through MSI installer
https://blog.morphisec.com/new-jupyter-evasive-delivery-through-msi-installer
Source code for the Zemra crimeware bot released
http://www.h-online.com/security/news/item/Source-code-for-the-Zemra-crimeware-bot-released-1631420.html
Vertical Integration is the Future of Technology AND Publishing and Advertising 
http://jonsteinberg.com/2012/07/03/tight-vertical-integration-is-the-future-of-technology-and-publishing-and-social-advertising/
Breaking Bad, Mad Men photographer warns that digital cameras can be 'too clear'
http://www.theverge.com/2013/8/14/4620040/frank-ockenfels-photography-interview
Things to do before you Die
http://things-todo-before-you-die.blogspot.com/
Digital mental wellness surveys could be the future of school screening
https://onezero.medium.com/washington-schools-mental-health-survey-puts-student-gender-and-sexuality-data-at-risk-38f58328df34
Using an EGPU with a Mini PC
https://www.cnx-software.com/2021/03/14/using-an-egpu-with-a-mini-pc-intel-nuc-7-8/
EU’s “Good Practices Guide” for DNSSEC Deployment
http://www.internetsociety.org/deploy360/blog/2012/02/valuable-info-in-eus-good-practices-guide-for-dnssec-deployment/
Yelp's Newest Weapon Against Fake Reviews: Lawsuits
http://www.businessweek.com/articles/2013-09-09/yelps-newest-weapon-against-fake-reviews-lawsuits
We switched our Rails Infra from Heroku to EC2
http://blog.quessen.com/blog/2013/06/09/moving-our-infrastructure-from-heroku-to-amazon-ec2/
Allowing LMIC to sleep soundly on a Feather bed
http://oshed.blogspot.com/2022/04/allowing-lmic-to-sleep-soundly-on.html
ThePatentScam by Austin Meyer
https://www.youtube.com/watch?v=d8XknFl1l_8&feature=youtu.be
FSF announces a major overhaul of free software High Priority Projects List
http://www.fsf.org/news/fsf-announces-a-major-overhaul-of-free-software-high-priority-projects-list
Tim Draper keeps defending Theranos
https://www.axios.com/tim-drapers-keeps-defending-theranos-2192078259.html
Show up
https://medium.com/i-dont-know-a-thing/f15065e7f4a6
I skateboarded 85km from Sydney to Wollongong in 12 hours. Here's the video
http://www.rotub.me/blog/my-skate-of-mind-video.html
Reddit in 2012 had 37 Billion Pageviews, 400 Million Unique Visitors
http://blog.reddit.com/2012/12/top-posts-of-year-and-best-of-2012.html
Culture Needs a Fool-Proof Definition
https://www.epicpeople.org/culture-needs-a-fool-proof-definition/
NYT Follow-Up: One Way To Solve Private Equitys Recruiting Problem
http://dealbook.nytimes.com/2014/07/07/one-way-to-solve-private-equitys-recruiting-problem/?module=BlogPost-Title&version=Blog%20Main&contentCollection=Private%20Equity&action=Click&pgtype=Blogs&region=Body
Woman Collecting Shellfish Discovers Dinosaur Footprint of ‘Jurassic Giant’
https://www.goodnewsnetwork.org/dinosaur-footprint-yorkshire-marie-woods-shellfish/
Boeing Sponsors $1M GoFly Prize for Best Personal Flying Machines
https://spectrum.ieee.org/tech-talk/transportation/air/boeing-gofly-prize-best-personal-flying-machines-aviation-news
MongoDB being removed from Heroku in 1 month
https://devcenter.heroku.com/changelog-items/1823
Red Cross implores hackers not to leak data for 515k “highly vulnerable people”
https://arstechnica.com/information-technology/2022/01/red-cross-hack-compromises-the-personal-data-of-515k-highly-vulnerable-people/
Tips for Software Engineering Interviews
https://boredhacking.com/tips-for-software-engineer-interviews/
The New Venture Capital: Interesting Slides about VC evolution
http://www.rocketcompanies.com/reports/new-venture-capital/
How New Horizons transmits data across 3B miles to Earth
http://hub.jhu.edu/2015/07/17/new-horizons-data-transmission
10 American Industries That Will Be Destroyed In The Next Decade
http://www.businessinsider.com/10-industries-that-will-be-destroyed-in-the-next-decade-2009-12
MazeBase: a sandbox for learning from games
https://github.com/facebook/MazeBase
Installing Database Drivers on Apache Superset
https://preset.io/blog/2020-05-18-install-db-drivers/
Data Center Hardware Driving IT Transformation
https://www.horizontechnology.com/news/data-center-hardware-driving-it-transformation/
Apple Meets with Turkish PM to Discuss $4.5 Billion iPad Education Initiative
http://www.macrumors.com/2013/02/01/apple-executives-meet-with-turkish-president-to-discuss-4-5-billion-ipad-education-initiative/
Google Developer Profile
https://google.dev/
Travel Agent to the Stars – Vue.js and D3.js SPA
https://neodigm.github.io/vue_voyagers/index.html
HTC One M9  announced with bigger, better screen and fingerprint sensor
http://www.digitaltrends.com/mobile/htc-one-m9-plus-china/
Seldon 1.4 adds GRPC
https://medium.com/seldon-open-source-machine-learning/seldon-1-4-adds-grpc-c3812d0f653b#.ul1pa5lfo
SQLite with Python Tutorial
https://pythonspot.com/python-database-programming-sqlite-tutorial/
Handling Errors in GraphQL
https://graphqlme.com/2018/02/24/handling-errors-in-graphql/
From create-react-app to create-any-app [video]
https://youtu.be/ilgM9RmaUGg
Reducing bias and ensuring fairness in data science
https://medium.com/civis-analytics/reducing-bias-and-ensuring-fairness-in-data-science-424ded3badbb
Shadow Brokers: The insider theory
https://medium.com/@msuiche/shadowbrokers-the-insider-theory-ded733b39a55#.hgi5yrhbe
20 Mental Disorders Explained in Typography
http://authorcloud.co/20-mental-disorders-explained-in-typography-d2h9y7m0n
Hits Daily Double Hacked
https://mobile.twitter.com/HITSDD/status/1089933219972038656
Star Control: Origins Returns to GOG and Steam
https://littletinyfrogs.com/article/493231/star-control-origins-returns-to-gog-and-steam
The Wertzone: Sailing Back into HOSTILE WATERS
http://thewertzone.blogspot.com/2018/02/sailing-back-into-hostile-waters.html
Thoughts on Reading
https://www.mxzou.com/blog/thoughts-on-reading/
As m-commerce takes the world contactless, should agencies follow suit?
https://www.thedrum.com/opinion/2021/06/24/m-commerce-takes-the-world-contactless-should-agencies-follow-suit
Apple Mountain ski slopes to remain closed for 'foreseeable future'
http://www.mlive.com/news/saginaw/index.ssf/2018/11/apple_mountain_ski_slopes_to_r.html
PubNub Messenger (Part 2 of 3): Room Management, History, and Presence
http://www.pubnub.com/blog/pubnub-messenger-part-2-of-3-room-management-history-and-presence/