Leonardo da Vinci is usually credited with conducting the first systematic study of friction in the late 15th century, a subfield now known as tribology that deals with the dynamics of interacting surfaces in relative motion. Da Vinci's notebooks depict how he pulled rows of blocks using weights and pulleys, an approach that is still used in frictional studies today, as well as examining the friction produced in screw threads, wheels, and axles. The authors of this latest paper used an experimental setup similar to da Vinci's.
At the OpenAI all-hands, staff were told that the most challenging aspect of the deal for leadership was concern over foreign surveillance, and that there was a major worry about AI-driven surveillance threatening democracy, according to the source. However, company leaders also seemed to acknowledge the reality that governments will spy on adversaries internationally, recognizing claims that national security officers “can’t do their jobs” without international surveillance capabilities. References were made to threat intelligence reports showing that China was already using AI models to target dissidents overseas.，推荐阅读91视频获取更多信息
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