On the one hand, it yields objective answers, free from the need to weigh various lines of evidence( such as DNA versus the fossil record) or to take account of which parts of the genome mutate fastest.

• 一方面，它产生客观的答案，不需要对不同的线索分别加权（如DNA证据与化石记录）也毋需考虑基因组的哪些部份突变得最快。