https://bsky.app/profile/halvarflake.bsky.socialhttps://bsky.app/profile/halvarflake.bsky.social/post/3mtolfg7ygs2aI wrote up three important lessons I learnt ony path to "maturity": https://thomasdullien.github.io/posts/2026-08-21-three-important-steps-in-my-maturation-process/22 Aug 2026 15:23 +0000at://did:plc:ztxdakpp3ki7b6bqpbud36ev/app.bsky.feed.post/3mtolfg7ygs2ahttps://bsky.app/profile/halvarflake.bsky.social/post/3mskfhqglwk2zThe EU gets a bad rap, but ... sometimes we have to appreciate that the 1949-2026 period is the longest period in *documented history* without interstate war among the bloodthirsty western European tribes.08 Aug 2026 06:01 +0000at://did:plc:ztxdakpp3ki7b6bqpbud36ev/app.bsky.feed.post/3mskfhqglwk2zhttps://bsky.app/profile/halvarflake.bsky.social/post/3msawv3c25k2eI have a personal update: Next monday, I will be starting at @OpenAI working on better cyber (which will also entail some efficiency work). I'm pretty excited about the things I will learn and the things we will do.04 Aug 2026 11:46 +0000at://did:plc:ztxdakpp3ki7b6bqpbud36ev/app.bsky.feed.post/3msawv3c25k2ehttps://bsky.app/profile/halvarflake.bsky.social/post/3mp5kgyrq7225I made a small animation illustrating my geometric intuition for what happens inside a simple feedforward ReLU neural network. Hope this is illuminating for someone.25 Jun 2026 23:10 +0000at://did:plc:ztxdakpp3ki7b6bqpbud36ev/app.bsky.feed.post/3mp5kgyrq7225https://bsky.app/profile/halvarflake.bsky.social/post/3moxajavai22bIn the last years, I spent some of my scarce free time writing up what I had learnt starting and running two companies, zynamics and optimyze The article is still work-in-progress, but I thought it's best to publish it now and iterate in public: https://thomasdullien.github.io/guides/entrepreneurship/23 Jun 2026 10:57 +0000at://did:plc:ztxdakpp3ki7b6bqpbud36ev/app.bsky.feed.post/3moxajavai22bhttps://bsky.app/profile/halvarflake.bsky.social/post/3mnweyqybck2jThe weirdest observation: I generated movies visualizing the polytope boundaries for ReLU networks using Muon and AdamW. Same experiment, same data, same random seed. The difference is the "crease pattern" that the optimizers produce.10 Jun 2026 09:19 +0000at://did:plc:ztxdakpp3ki7b6bqpbud36ev/app.bsky.feed.post/3mnweyqybck2jhttps://bsky.app/profile/halvarflake.bsky.social/post/3mmgovtrpdk25Confession time: I use agentic coding all day, every day. It makes me much more productive. But I am also terrified of skill atrophy, I feel like I need to break out pen & paper to force myself to "weight-lift" mentally so I don't forget how to think. How do y'all handle this?22 May 2026 10:08 +0000at://did:plc:ztxdakpp3ki7b6bqpbud36ev/app.bsky.feed.post/3mmgovtrpdk25https://bsky.app/profile/halvarflake.bsky.social/post/3mlpomlv6ms2xhttps://www.faz.net/premium/digitalwirtschaft/thomas-dullien-zu-anthropics-mythos-software-war-nie-auf-perfekte-sicherheit-ausgelegt-das-raecht-sich-accg-200822228.html I wrote a FAZ guest article.13 May 2026 06:32 +0000at://did:plc:ztxdakpp3ki7b6bqpbud36ev/app.bsky.feed.post/3mlpomlv6ms2xhttps://bsky.app/profile/halvarflake.bsky.social/post/3mjwy5crex22lWith age, the male body produces less testosterone but more advice.20 Apr 2026 17:21 +0000at://did:plc:ztxdakpp3ki7b6bqpbud36ev/app.bsky.feed.post/3mjwy5crex22lhttps://bsky.app/profile/halvarflake.bsky.social/post/3mintiqqb722rI am observing up to 30% (!!!) wall-time fluctuations running the same code on the same data and the same VM type on GCE. That seems insane to me, in terms of noisy neighbor effects. What is the worst fluctuation you've seen on cloud machines?04 Apr 2026 08:38 +0000at://did:plc:ztxdakpp3ki7b6bqpbud36ev/app.bsky.feed.post/3mintiqqb722rhttps://bsky.app/profile/halvarflake.bsky.social/post/3mhua4r3dq22dI wrote a few lines about my development setup (which - by accident, not by design - mitigates a good number of risks associated with vibecoding. Not all of them, but many.) https://addxorrol.blogspot.com/2026/03/slightly-safer-vibecoding-by-adopting.html25 Mar 2026 04:15 +0000at://did:plc:ztxdakpp3ki7b6bqpbud36ev/app.bsky.feed.post/3mhua4r3dq22dhttps://bsky.app/profile/halvarflake.bsky.social/post/3mcs2j5kgm22vDue to current events:19 Jan 2026 16:23 +0000at://did:plc:ztxdakpp3ki7b6bqpbud36ev/app.bsky.feed.post/3mcs2j5kgm22v