Science, we are frequently told, is tentative. And given the history of science, there is every reason for it to be tentative. No scientific theory withstands revision for long, and many are eventually superseded by ideas that flatly contradict their predecessors. Scientific revolutions are common, painful, and real. New theories regularly overturn old ones, and no scientific theory is ever the final word.
But if science is tentative, scientists are not. As the philosopher of science Thomas Kuhn rightly noted, it takes a revolution to change scientific theories precisely because scientists do not hold their theories tentatively. Thus, in his Structure of Scientific Revolutions (1996), Kuhn quotes with approval Max Planck, who wrote, A new scientific truth does not triumph by convincing its opponents and making them see the light, but rather because its opponents eventually die, and a new generation grows up that is familiar with it."
Read the complete article on the Discovery Institute website.