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Fraser
2018-Jan-30, 09:10 PM
When astronomers scan the atmospheres of other worlds, they値l be looking for gases to confirm that yes, indeed, there痴 life there. It turns out, this is actually pretty tough.
The post What’ll It Take to Find Life? Searching the Universe for Biosignatures (https://www.universetoday.com/138406/searching-for-biosignatures/) appeared first on Universe Today (https://www.universetoday.com).


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Selfsim
2018-Jan-30, 10:48 PM
Well, very slowly Cain attempts to emerge from a past history of previously self-admitted over-immersion in the fog of science fiction, eh?

Then, right at the end of the article, he reverts back to the error of confusing a philosophical question with a scientific one:

But remember, this is probably the most important scientific question that anyone can ask: are we alone in the Universe?
Well, firstly 'importance' is a purely subjective criterion and secondly, establishing 'uniqueness' or otherwise (aka: 'alone') in a search space constrained only by 'the Universe' is impractical, and therefore can already be predicted as returning imprecise results at the very scales demanding measurement precision! (He actually makes this case in his own article).
Therefore, his final above point is actually more worthy of being forgotten because of this.. (which is directly opposed to his above point of remembering it)! :rolleyes:

Such intransigent reasoning is typically indicative of a deep attachment to some philosophically based ideology.
Cain has demonstrated here, that he is no scientific thinker.

DaveC426913
2018-Jan-31, 01:00 AM
Well, firstly 'importance' is a purely subjective criterion and secondly, establishing 'uniqueness' or otherwise (aka: 'alone') in a search space constrained only by 'the Universe' is impractical, and therefore can already be predicted as returning imprecise results ...
We won't be able to prove we are alone in the universe, but it would only take one datapoint to prove that we are not alone in the universe.:)

Selfsim
2018-Jan-31, 05:28 AM
We won't be able to prove we are alone in the universe, but it would only take one datapoint to prove that we are not alone in the universe.:)My comment was addressing the proposition of a test which is constrained only to 'the Universe'.
This comment thus does not pre-empt what may or may not happen during the execution of such a test, as a test criterion in itself .. (whereas yours does).
:)