String theory, heralded as a potential theory of everything, has been dominant in theoretical physics for thirty years with more scientific papers arising from it that any other theory. But critics argue the theory has held undue influence and it is an error to pursue it. String theory proposes 11 dimensions and a vast landscape of possible universes without any evidence. Moreover, a theory of everything has not been forthcoming, and predictions of supersymmetry particles have not been confirmed.
Is it time to move on from string theory, recognise that the search for supersymmetry has failed, and seek alternative accounts of the universe that are supported by observation and experiment? More fundamentally should we see mathematics without a connection to the physical world as little more than fantasy? Or is the continued dominance of string theory justified by its potential to unify our understanding of the universe once and for all?
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