We have tons of simplified examples of idealized theories with fixed points. The community at large has worked a lot on empty space-time, just pure gravity. Actually, most of us work in an even more simplified setting where there are only quantum fluctuations of space, rather than fluctuations of both space and time. But nevertheless, people have tested this in literally hundreds of papers and found very robustly that this fixed point where things stop changing exists.
В Белом доме ответили на вопрос о снятии санкций с России00:46
，这一点在使用 WeChat 網頁版中也有详细论述
const spaghetti = () = penne();。谷歌对此有专业解读
Data. A flat, contiguous buffer of elements in row-major order.