@richcollins Should clarify: only if it's of independent origin. It's _ad absurdum_: my point is we won't find such life.
I predict that all these Earth-like planets will be found lifeless. http://www.centauri-dreams.org/?p=22313#comment-98679 … http://unenumerated.blogspot.com/2009/10/how-to-save-yourself-from-chasing.html …https://twitter.com/ScienceNews/status/624315747347509248 …
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@NickSzabo4 Do you think intelligent life arises only very rarely, or that it is destroyed / destroys itself before becoming spacefaring?
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@richcollins No problem, I'm just nit-picking my own statement. :-) -
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@bitcoinbelle When I tell about the Drake Equation at parties, the girls are all at my feet… https://www.youtube.com/watch?v=MlikCebQSlY … -
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@NickSzabo4 It will be hard to determine that one way or another. -
@JMGrange Highly evolved molecules (e.g. chlorophyll) give off unique spectral signatures. Will be able to e.g. rule out w/s photosynthesis. -
@NickSzabo4 Very true. I believe, thought not certain, that we may have a hard time detecting things like Prokaryote cells with precision. -
@JMGrange We'll have a hard time finding bacterial dwarves (live only underground) and bacterial hobbits (good at hiding).
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@NickSzabo4 profound and chilling prediction. With the vastness of space, what could the odds be that life only exists on Earth? -
@xbtbtc Per above links, P(life originating per galaxy) << 1% => odds it did so only once in our galaxy 100% to that precision. -
@NickSzabo4 If planet(s) exist which can "support" life, and "life" is a random event, shouldn't we expect greater odds than 1%? -
@NickSzabo4 comparing apples to oranges? <<1% life on Earth-like planets (an unknown known);100% for a known known (life in our galaxy)
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@NickSzabo4 Fair points, but accepting your assumptions about how life behaves means we have to believe replicators are incredibly rare. -
@matthew_d_green It means an origin of a self-sustaining ecosystem (that includes replicators) is astronomically improbable.
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@NickSzabo4 There's a huge conditional dependence. If we get strong evidence of life on Europa/Mars/Ceres, it raises the probability a lot. -
@topynate Only if it's independently originated, which I predict it won't be (if exists will be result of panspermia).
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@NickSzabo4 I agree with you. Our own civilization may not endure long enough to explore them. The world has much 'growing up' to do.Thanks. Twitter will use this to make your timeline better. UndoUndo
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