Mattias Petter Johansson (MPJ) @mpj.fff.dev · 04/05/2026A Return to Fun funfun.email/p/return-to-... 281 8
Reposted by Mattias Petter Johansson (MPJ)Oregon 🕎🎲 @oregonthedm.bsky.social · 09/04/2025Biggest commitment to a 3 second joke I've ever seen 8849108428440 91.1K
Mattias Petter Johansson (MPJ) @mpj.fff.dev · 31/05/2025I am reading Daniel Levintins excellent book ”The Organized Mind” and this part perfectly explains why I sometimes get stuck in multi-hour obsessive TypeScript rabbit holes to create the perfectly (unnecessary) typed expression for a problem. 050 5
Mattias Petter Johansson (MPJ) @mpj.fff.dev · 27/05/2025I love this format with @bashbunni.dev and I hereby promise publicly to try doing this. Also I so love the aesthetics and idea @charm.sh, makes me feel super great for some reason www.youtube.com/watch?v=Qpz0...youtube.comcode with me for 1 hour (cozy, soft typing)YouTube video by bashbunni 170 7
Mattias Petter Johansson (MPJ) @mpj.fff.dev · 26/05/2025💛 d3.interpolate (Number) | Dirty D3 - Episode 4 📼 Full video: youtu.be/6Vn1TWyOsYo #dataviz #d3js #fffn 1100 10
Mattias Petter Johansson (MPJ) @mpj.fff.dev · 23/05/2025hmm should I make a Rough Regex course after my Dirty D3 series ends (in 2054) 000 0
Mattias Petter Johansson (MPJ) @mpj.fff.dev · 21/05/2025💛It’s seldom one gets shoutouts for commercial partnerships, but @augmentcode.com really is that good - it’s really an incredible thing that a platform targeting large legacy codebases is free for OSS thx @adrienjoly.com 120 2
Mattias Petter Johansson (MPJ) @mpj.fff.dev · 19/05/2025New episode! 📽️💛 What is interpolation, really? | Dirty D3 - Episode 3 youtu.be/LOaqG--VWas #dataviz #d3jsyoutu.beWhat is interpolation, really? | Dirty D3 - Episode 3 (and "default interpolator"?)YouTube video by Fun Fun Function 170 7
Reposted by Mattias Petter Johansson (MPJ)Dominikus @do.minik.us · 19/05/2025I'm obsessed with this: Mystical, a visual representation of PostScript as magical symbols. What if software departments were catacombs of hooded figures scratching arcane circles into the dirt github.com/denismm/myst... (via @piterpasma.nl) 1194 19
Mattias Petter Johansson (MPJ) @mpj.fff.dev · 15/05/2025I love love love this example, really visceral way of unstanding variance 020 2
Reposted by Mattias Petter Johansson (MPJ)Тsфdiиg @tsoding.bsky.social · 02/05/2025Humanity may never be able to find a counter-example to Collatz conjecture if this package gets removed from npm. 71333 133
Mattias Petter Johansson (MPJ) @mpj.fff.dev · 11/03/2025Was sent this golden thing from 3 months ago written by @peck.phd 120 2
Mattias Petter Johansson (MPJ) @mpj.fff.dev · 11/03/2025Are you sure you want to hide the ads in your editor 040 4
Reposted by Mattias Petter Johansson (MPJ)Micah G. Allen @micahgallen.com · 10/12/2024We often mind-wander about our past, present, & future. What happens when our minds drift towards our bodies? In a new fMRI study (n ~ 500), @leahbanellis.bsky.social + team discovers unique neural, affective, & physiological correlates of "body-wandering" at rest. www.biorxiv.org/content/10.1... 69527 95
Reposted by Mattias Petter Johansson (MPJ)Dr Lucy Foulkes @lucyfoulkes.bsky.social · 01/02/2025Me in the WSJ today, arguing that the relationship between social media and mental health is not clear cut, and bans for teenagers aren't the answer. (NB I did not pick this title, I would have gone for something kinder. I understand why people are worried.) 1/ www.wsj.com/health/welln...wsj.comEssay | Stop Panicking Over Teens and Social MediaModern life is digital. Adults need to help young people navigate the costs and benefits, not launch bans and hope for the best. 14113 41
Reposted by Mattias Petter Johansson (MPJ)Luca Kolibius @lucakolibius.bsky.social · 05/03/2025New manuscript published! ✍️👀 Concept neurons evolve from index neurons through overlapping memories. Check it out here: www.cell.com/trends/cogni... 1/15cell.comOn the origin of memory neurons in the human hippocampusThe hippocampus is essential for episodic memory, yet its coding mechanism remains debated. In humans, two main theories have been proposed: one suggests that concept neurons represent specific elemen... 210530 105
Reposted by Mattias Petter Johansson (MPJ)Camilla Nord @camillanord.bsky.social · 06/01/2025Can what you eat change your mind? 🍎 My first piece in @theguardian.com on why we like what we like, and the role the gut might play in mental health. Hint: it’s probably not all about the microbiome. 711513 115
Mattias Petter Johansson (MPJ) @mpj.fff.dev · 06/03/2025I find it so lovely that @augmentcode.com uses the separate domain name hkjl.ai for their @neovim.io integration 💛💛💛 much poise #neovim 060 6
Mattias Petter Johansson (MPJ) @mpj.fff.dev · 06/03/2025This beautiful video by Kurtzgesagt voiced by @johngreensbluesky.bsky.social captures well why I like following the Green brothers. LFG in an orderly fashion. www.youtube.com/watch?v=GFLb...youtube.comThis Disease is Deadlier Than The PlagueYouTube video by Kurzgesagt – In a Nutshell 000 0
Mattias Petter Johansson (MPJ) @mpj.fff.dev · 28/02/2025but the bitcoin can be hacked at any time 000 0
Reposted by Mattias Petter Johansson (MPJ)arxdraconis.bsky.social @arxdraconis.bsky.social · 24/02/2025If you're curious about coding-assisted platforms (but tired of the hype and unfulfilled promises), have a look at this video about Augment Code. Maybe, just maybe, this is for you :) #aifordevs #aicoding youtu.be/LEOSWYlQyVw?...youtu.beFrom Physics to AI: Building a 200ms Coding Assistant | ft. Guy Gur-Ari, co-founder of Augment CodeYouTube video by Fun Fun Function 041 4
Mattias Petter Johansson (MPJ) @mpj.fff.dev · 25/02/2025How many % of the currently experienced value of large language models come from the fact that they ingest in a way that a traditional search engines would have been sued and blocked to oblivion if they did? And how expensive would they be if they paid fairly for the privilege? 100 1
Reposted by Mattias Petter Johansson (MPJ)Maarten Lambrechts @maartenzam.bsky.social · 25/02/2025If you're into D3 or Observable, there is no doubt you ran into Fil at some point. I learned a ton from him, and this interview only adds to that 0113 11
Mattias Petter Johansson (MPJ) @mpj.fff.dev · 24/02/2025I'm super duper proud to officially announce the FFF partnership with @augmentcode.com, the developer AI that I've been using as my primary for the last few months. Go give it a whirl using fff.dev/augment and let me know what you think! 130 3
Mattias Petter Johansson (MPJ) @mpj.fff.dev · 24/02/2025good monday morning #dataviz bluesky, I just dropped a new Fun Fun Function video: youtu.be/aAP3m0PyGrY 'Line Plots are Plot Lines' (a data visualization spoken word cover of funfun.email issue #12)youtu.beLine Plots are Plot Lines | A data visualization spoken word cover of funfun.email #12)YouTube video by Fun Fun Function 071 7
Reposted by Mattias Petter Johansson (MPJ)Saloni @scientificdiscovery.dev · 24/02/2025New article by me! It's a common mistake to think the TFR is a prediction of the average number of children women will have over their lifetimes. But it's not. The TFR can decline even when the eventual number of children per woman stays constant or even increases; the opposite can happen too. 🧵 1122761 227
Mattias Petter Johansson (MPJ) @mpj.fff.dev · 22/02/2025This wonderful man, @rshean.bsky.social, has written what Shakespeare would have, had he been working with Excel at scale* *= “scale” 030 3
Mattias Petter Johansson (MPJ) @mpj.fff.dev · 21/02/2025This was sort of foreshadowing youtu.be/ohDB5gbtaEQ?...youtu.beArgument - Monty PythonYouTube video by unmusedtails 010 1
Mattias Petter Johansson (MPJ) @mpj.fff.dev · 20/02/2025Can you please explain #PowerBI to me? Wrong answers only. 7103 10
Mattias Petter Johansson (MPJ) @mpj.fff.dev · 19/02/2025Very exhaustive test of Claude interpreting graph, fun to read! 033 3
Mattias Petter Johansson (MPJ) @mpj.fff.dev · 11/02/2025So it is trained on your uncle on Facebook? 000 0
Mattias Petter Johansson (MPJ) @mpj.fff.dev · 10/02/2025This was much news to me. Lots of interesting aspects with this article, but the detail that concept cells fire only after a 300 ms delay, for some reason, stuck out for me. 010 1
Reposted by Mattias Petter Johansson (MPJ)Ansgar Wolsing @ansgarw.bsky.social · 09/02/2025It's that time of the year again. #SuperBowl 📊 2276 27
Reposted by Mattias Petter Johansson (MPJ)Zack Labe @zacklabe.com · 08/02/2025Saturday ice update - #Arctic sea ice extent is currently the *lowest* on record (JAXA data) • about 790,000 km² below the 2010s mean • about 1,450,000 km² below the 2000s mean • about 2,040,000 km² below the 1990s mean • about 2,430,000 km² below the 1980s mean Plots: zacklabe.com/arctic-sea-i... 11240158 240
Mattias Petter Johansson (MPJ) @mpj.fff.dev · 05/02/2025Generally not posting political stuff but I found this opinion piece by @ezrakleinbot.bsky.social to be an interesting and calming take, and elucidating on what is going on in the media space. www.youtube.com/watch?v=K8QL...youtube.comDon't Believe Him | The Ezra Klein ShowYouTube video by The Ezra Klein Show 000 0
Mattias Petter Johansson (MPJ) @mpj.fff.dev · 04/02/2025Really looking forward to listening to this new investigative pod series by @suelinwong.bsky.social. I was made aware of this fascinating (and unnerving) phenomena through @pjvogt.bsky.social on the episode pjvogt.substack.com/p/whos-behin... and this seems like a much bigger deep dive.bsky.app 020 2
Mattias Petter Johansson (MPJ) @mpj.fff.dev · 02/02/2025This was incredibly interesting, look at the video first and inspect your own response before reading further into the article, that makes the article a lot more interesting. www.effaff.com/the-data-sto...effaff.comThe (data) stories we tell ourselvesCan geometric shapes be a**holes? What can Heider and Simmel's moving shapes tell us about interpreting visualizations? 040 4
Reposted by Mattias Petter Johansson (MPJ)David Higham @oldtrotter.bsky.social · 31/01/2025Astonishing article in today’s FT on the private parking industry. Of course, private equity is involved. 84335 43
Reposted by Mattias Petter Johansson (MPJ)Edward Harrison @edwardnh.bsky.social · 31/01/2025On Nvidia, this chart from Deutsche Bank shows the earnings expectations baked into the company's stock price. I see it as completely unrealistic and a recipe for disaster tbh. Anyone who doesn't understand that AI is a mania needs to look at charts like this 1369 36
Reposted by Mattias Petter Johansson (MPJ)Alex Selby-Boothroyd @alexselbyb.bsky.social · 31/01/2025Bitcoin price tracker but only using headlines about the landfill hard drive 06920 69
Mattias Petter Johansson (MPJ) @mpj.fff.dev · 29/01/2025American company Napster complains that their content is being made available in another competitive product without their consent www.ft.com/content/a0df...ft.comOpenAI says it has evidence China’s DeepSeek used its model to train competitorWhite House AI tsar David Sacks raises possibility of alleged intellectual property theft 020 2