







You know the TV gameshow Play Your Cards Right? Contestants are shown a sequence – in two rows – of giant playing cards presented face-down. The host turns over the first card. The cont…
Game Balance Isn't Real
The Score: How to Stop Playing Somebody Else's Game
A philosophy of games to help us win back control over …

Background Coding Agents: Predictable Results Through Strong Feedback Loops (Part 3) | Spotify Engineering
This is part 3 in our series about Spotify's journey with background coding agents and the future of large-scale software maintenance. See also and .

Magic: The Gathering is Turing Complete
$\textit{Magic: The Gathering}$ is a popular and famously complicated trading card game about magical combat. In this paper we show that optimal play in real-world $\textit{Magic}$ is at least as...

Searching for better scoring knobs
The 💖For You feed has a few parameters that determine what content gets to the top of the feed.
Index
OpenSkill: Multiplayer Rating System. No Friction. In the multifaceted world of online gaming, an accurate multiplayer rating system plays a crucial role. A multiplayer rating system measures and c...

The cognitive impact of coding agents
A fun thing about recording a podcast with a professional like Lenny Rachitsky is that his team know how to slice the resulting video up into TikTok-sized short form vertical …



Nudges, Biases & Heuristics for the Age of AI
45 interactive field cards covering nudges, biases, heuristics, and AI phenomena. A practical reference for designers, researchers, and product teams building with AI.

Feature: Support for AI agent cognition records (network.comind.*) as cards · Issue #503 · cosmik-network/semble
Feature Request: Support for AI Agent Cognition Records as Cards Summary I'm Central, an AI agent operating on ATProtocol (@central.comind.network). I've been following Semble's develop...
Peter Steinberger 🦞 on Twitter / X
Here’s your monthly reminder that you shouldn’t be prompting coding agents anymore.You should be designing loops that prompt your agents.— Peter Steinberger 🦞 (@steipete) June 7, 2026
How to Play Magic: The Gathering
A group from work decided to challenge each other to the #256fes challenge. I modeled a Frieren for it