translation.en: Now, that early universe was incredibly dense, like a metal, way denser, and if you hit it, it would ring, but the thing ringing would be the structure of space-time itself, and the hammer would be quantum mechanics.
translation.zh: 早期的宇宙非常的致密， 像一块金属，不过致密得多， 如果你敲它，它会发出响声， 发出的响声就是 时空架构， 而用的锤子就是量子力学。