Marcelo Gleiser on the nature and limits of science

As he tells Physics Today in a Q&A:

Final theories have the seductive appeal of “grand answers” and those are, of course, an important scientific pursuit: How far can we get simplifying our fundamental description of matter? But the real core of science is related not to such questions but to more concrete problems and technical challenges. For example, the possibility of life on Mars is an essential scientific question having nothing to do with final theories. I think a healthy scientific community would have a good balance of both, as long as “final theories” were properly renamed as fundamental theories. There are no final theories, only better ones.

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