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US healthcare still stupidly expensive, with pathetic outcomes, study finds

US healthcare still stupidly expensive, with pathetic outcomes, study finds

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An updated analysis comparing healthcare systems across 20 countries finds once again that the US system is an outstandingly poor performer, summarized as being a “persistent failure” for its high costs, poor health outcomes, and premature deaths. “Americans pay more for health care, get less in return, and remain far more exposed to illness, debt, and insecurity than their peers,” the report concludes. The report comes from The Commonwealth Fund, a private foundation focused on healthcare system performance, […]

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markdown-svg-renderer

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Tool: markdown-svg-renderer A slightly customized Markdown rendering tool with special treatment for fenced code SVG blocks – it both renders the image and provides a tab for switching to the code view. You can paste in Markdown or give it a URL to a CORS-enabled Markdown file or Gist. Here’s an example where it loads a Markdown file full of LLM pelican logs for Opus 4.8. Tags: svg, tools, markdown, cors

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Researchers develop a new process to get lithium out of rocks

Researchers develop a new process to get lithium out of rocks

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While we make batteries based on many different chemistries, nothing has approached the massive scale at which we can produce lithium batteries. That scale makes the economics of lithium-ion batteries hard to compete with. Even if we develop a superior battery technology, it’s unclear whether we can get manufacturing costs down quickly enough to compete with the efficiency of the lithium supply chain and manufacturing. The one thing that could change the dynamics is a supply crunch. While […]

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FBI says Google engineer used internal search data to win $1.2M on Polymarket

FBI says Google engineer used internal search data to win $1.2M on Polymarket

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The US charged a Google software engineer with insider trading after he allegedly made a profit of $1.2 million on Polymarket bets related to which public figures would top Google’s rankings for the most searched names in 2025. Michele Spagnuolo, an Italian citizen who lives in Switzerland, “was arrested on Wednesday and brought before a federal judge in New York,” the BBC wrote. Spagnuolo was charged “with commodities fraud, wire fraud, and money laundering arising from his scheme […]

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Build a test suite that grows with your agent with dataset management in Amazon Bedrock AgentCore

Build a test suite that grows with your agent with dataset management in Amazon Bedrock AgentCore

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Agent evaluation is most powerful when you combine fast-moving online signals with stable offline baselines. To understand whether your agent is truly improving over time, you need a fixed benchmark alongside your changing real-world traffic. Managing test cases for evaluation baselines as a dataset in Amazon Bedrock AgentCore brings the discipline of versioned test fixtures to agent evaluation. You can author scenarios with inputs, expected outputs, assertions, and tool sequences, then publish them as immutable numbered versions that […]

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Fairness-Aware Federated Learning with Trajectory Shapley Value

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Federated learning is an emerging distributed paradigm that addresses the challenges posed by heterogeneous, privacy-sensitive data. It enables multiple clients to train a model collaboratively by aggregating their local updates at a server. However, conventional aggregation schemes typically use fixed weights that fail to reflect unequal and time-varying client contributions, leading to biased and unstable learning. To improve fairness and stability, we propose the Trajectory Shapley Value (TSV), a contribution metric that evaluates how each client influences the […]

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Claude Opus 4.8 is now available on AWS

Claude Opus 4.8 is now available on AWS

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Today, we’re excited to announce the availability of Anthropic’s most advanced Opus model, Claude Opus 4.8, on Amazon Bedrock and the Claude Platform on AWS. Claude Opus 4.8 represents a meaningful step forward, delivering improvements across the workflows teams run in production, from agentic coding and deep knowledge work to multi-stage autonomous tasks that span hours of independent operation. With Claude Opus 4.8 on Amazon Bedrock you can build within your existing AWS environment, maintain enterprise security and […]

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How’s it going? Reinforcement learning in language models recruits a functional welfare axis

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How does reinforcement learning shape a language model’s internal representations? We present evidence that RL recruits a pre-existing representation of functional welfare: an estimate of how well or badly the system is doing, relative to its goals. We train several language models in a novel, semantically neutral maze environment. We then extract concept vectors for rewarded and punished trajectories, and evaluate those vectors in settings unrelated to the maze environment. The punishment vector behaves like a representation of […]

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TriSearch: Learning to Optimize Triangulations via Bistellar Flips

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We introduce TriSearch, a reinforcement learning framework for optimizing objectives over triangulations of a polytope via bistellar flips. The key idea is a circuit-supported subtriangulation action representation: feasible flips are encoded by their supporting circuit and realized local subtriangulation, enabling a learned policy to rank them using local geometric and combinatorial features. This yields a dimension-agnostic interface and enables efficient traversal of the flip graph without explicit enumeration of the full triangulation space. Instantiated in 3D and 4D, […]

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