晴空羽 wrote:新聞出處看來霍金似乎...(恕刪)
ctw0510 wrote:霍金最近似乎是想開了...(恕刪)
lenda wrote:時間可以經由光速旅行往前走,但不能往後退,故不需要擔心影響時空因果論...(恕刪)