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He doesn't address the possibility that the start of life is "the great filter", but after that point, microbes were shared between planets in our solar system
by bioweek 17y ago
He doesn't address the possibility that the start of life is "the great filter", but after that point, microbes were shared between planets in our solar system via metoerites, impacts, etc.
In which case it wouldn't matter what we found on Mars.
- gort 17y agoHe does use the word "independently", presumably to take this into account.
- dmfdmf 17y agoRight. But that is a big assumption of his position. If there is life on Mars and it is DNA or RNA based I would say the independence assumption is less certain. Then the author can go on happily assuming that the "filter" is probably behind us. Not sure why that is such a big thing though.