And so inaccurate, wild speculations aside about what that means  for all life, where all life is heading, a real scientific question remains, which is why does it  keep reappearing?

LULU: 所以除了不准确、疯狂的猜测, 关于这对所有生命意味着什么, 所有生命将走向何方, 一个真正的科学问题仍然存在, 那就是为什么它不断重现?