But Kuhn did see a means through which true change could come—both in science and politics, whose revolutions Kuhn saw as fundamentally similar. Even though revolutions—profound shifts in thought—are a response to inherent problems, mere arguments and empirical evidence pointing out the problem aren’t enough to start them, Kuhn argued. A compelling alternative theory also needs to be available. Moreover, since two competing theories lack enough common ground to agree on an evaluation of the arguments and evidence, a level of faith in the new theory is needed, as well as persuasion by rhetoric and other non-evidence based means.
via Why Populists Reject Evidence
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