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Crudity of methods. They are doing the best they can, and it really is an amazing technical achievement to send a robot 35 million miles away, have it scoop up soil, and return a basic analysis of it. But it is still largely a case of the four blind men describing an elephant. The technology will improve, of course, but the current method leads to many ambiguous results, and that is the biggest difficulty in exobiology at this time.

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14y ago

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