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Simple divide-by-depth formula explains 3D-to-2D graphics projection

A blog post highlighted by developer tsoding breaks down 3D perspective projection into one basic operation: dividing a point's x and y coordinates by its z (depth) value. The piece demonstrates this with live shader examples, showing how a ball's position and size shrink toward a vanishing point as it moves farther from the camera along the z-axis.

AI Automates Execution, Shifting Founders' Focus to Judgment and Accountability

A new analysis reports that as generative AI tools take over drafting, analysis and content creation, founders are spending less time producing work and more time deciding what should represent their business. Citing Microsoft's 2025 Work Trend Index, the piece notes 82% of business leaders see this as a pivotal year for rethinking operations due to AI, with nearly half expecting to expand capacity through digital labor within 12-18 months. The core argument is that AI can generate output but cannot take responsibility for it, leaving leaders accountable for outcomes.

Pentagon says flawed AI analysis nearly triggered a false alarm over China

A report indicates that faulty artificial intelligence output was mistaken for genuine intelligence within US military systems, coming close to provoking a serious confrontation with China. The error reportedly stemmed from an AI-generated assessment being treated as credible without adequate human verification before reaching decision-makers.

Navy CTO Justin Fanelli refreshes tech investment wishlist to guide startup funding

Justin Fanelli, the Department of Navy's chief technology officer, spoke with reporters even as he was rushed onto an unannounced flight, underscoring the pace of his current work. He revealed the Navy is preparing an updated list of its longer-term technology priorities, this time reviewed by several venture investors before publication, following investor feedback that last year's list reshaped how they viewed the Navy's purchasing plans.

Fed Rate Hike and AI Safety Worries Drag Down Dow, Hit Goldman Sachs Hardest

Wall Street saw another volatile week as the Federal Reserve raised interest rates a quarter point to a range of 3.75%-4%, its first hike in three years, while renewed concerns about AI safety rattled tech stocks. The Dow fell 1.7% for its third consecutive losing week, led by steep declines in bank stocks including Goldman Sachs, which dropped nearly 8.5%. The S&P 500 and Nasdaq held up better, with the Nasdaq even gaining slightly as investors bought back into AI names after an early sell-off, while oil price swings tied to Mideast tensions added further pressure on companies like Boeing and FedEx.

Hong Kong researchers demonstrate InjectEave attack that reads headphone audio from 30 meters away

Researchers from Hong Kong University of Science and Technology (Guangzhou) and Hong Kong Polytechnic University unveiled InjectEave, a method that beams low-frequency electromagnetic signals at devices to trigger leaks through their nonlinear analog components, such as amplifiers and converters. In tests on 11 commercial products, including Sony, Apple and Philips headphones and a VoIP phone, the technique reconstructed intelligible audio from as far as 30 meters, even through walls, using off-the-shelf radio and antenna equipment.

AI model GPT-6 Astra decodes 1918 German WWI cipher for the first time

Developer Prinz used an AI system called GPT-6 Astra to break a 108-year-old encrypted German WWI radio message, one of 50 unsolved ciphers listed on the German site Scienceblogs.de. The AI identified 'TRUPPENVERSCHIEBUNG' as the keyword for the ADFGVX cipher, revealing a warning about a British cruiser arriving at Sevastopol followed by an Allied squadron. Astra cross-checked the decoded date against historical naval logs, confirming HMS Canterbury's arrival in Sevastopol on November 24, 1918, closely matching the message's timeline.

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