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.
I wanted to verify this for myself, so I set up a small test harness on my production server. It ran 360 chat completions across a range of models, cancelling each request immediately after the first token was received. Below are the resulting first-token latency measurements:
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五代王处直墓彩绘散乐浮雕图上的一群无名女子。该文物2026年2月22日在河北省博物馆展出。视觉中国丨图