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    Reddit announced on October 29, 2026, alongside third-quarter results showing revenue up 53% year-over-year to $895 million, that it will shift the platform to a primarily logged-in experience, with full testing of a logged-in-only version set to begin in select markets outside the United States in the fourth quarter of 2026.

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    Researchers at China’s University of Science and Technology have shown that their handheld quantum magnetometer can detect a subway train moving under a city street. In real-world tests, the small device tracked changes in Earth’s magnetic field as the train arrived, stopped, and left the station.Peng Xinhua and his team developed the magnetometer for places…

    In a previous article, we saw why training with MSE forces a model to report only the conditional mean, and howGaussian NLL lets it learn an honest per-step uncertainty σ sigma as well. That was the one-step story. This post picks up where that left off.