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.
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更让人忧虑的是，AI 正在批量生成文字内容，这些低成本的文本涌入市场，让原本就艰难的写作谋生变得更难。训练 AI 用的是人写的书，而 AI 产出的内容，正在挤压人继续写书的空间，循环往复。