For example, he suggests that Hoover's rigid personality made him unable to accept changes in classical economic theory during the beginning of the Great Depression, and to adopt a more Keynesian approach. Barber asserts that it was not the conventional wisdom of the time that hampered Hoover as much as his own character, despite the fact that few people really could assuredly state they had the 'answer' to the financial crisis at that time. The adaptive-negative aspects of Johnson's personality made that president similarly resistant to the idea of pulling out of stress upon good humor and flexibility do seem to be mirrored in the personality and demeanor of the current president-elect so one can only hope that at least some aspects of his theory are accurate, in terms of his view that a president possessing an active and adaptable mindset bodes well for the nation.