Though these effects are completely negligible now, they were very important in the beginning of the big bang, which is why a quantum theory of gravity is needed to describe how the big bang started.

• 虽然这些效应目前完全可以忽略，它们在大霹雳开始之时曾经非常重要，这就是为什麽我们需要量子重力论来描述大霹雳如何开始。