Rovelli

基本解釋

"For us, time exists and flows," says Rovelli.
事實(shí)上，宇宙是沒(méi)有任何外部的。
Yes, says Rovelli, but there is a physical explanation for it.
可以設(shè)想一個(gè)盒子里的氣體，我們不可能跟蹤各個(gè)分子在每時(shí)每刻的位置和動(dòng)量，但是我們具有這個(gè)環(huán)境里微觀狀態(tài)的總體知識(shí)。
Rovelli's approach seems tantalisingly close to surmounting that obstacle.
羅威利的做法似乎是只差一點(diǎn)就克服這一障礙了。
Time can be compared with a property such as temperature, which needs atoms to exist, Rovelli explains.
羅維理解釋說(shuō)，溫度的概念有賴于原子的存在，而時(shí)間和溫度這種性質(zhì)有相似之處。
"One of the traditional difficulties of quantum gravity was how to make sense of a theory in which the time variable had disappeared," Rovelli says.
事實(shí)上，他們甚至不能完全肯定時(shí)間到底是否是真的存在。