Answer:
Besides being quite incompetent, President Hoover was probably out of touch with reality. He argued that people were out of jobs because they were looking for better jobs, like selling apples.
President Roosevelt, who was the complete opposite of his predecessor, believed in the Keynesian theory of government, and increased government spending with the New Deal. His New Deal policy helped the economy rebound from the Great Depression and the start of WWII also helped the US economy. This increase in government spending helped to create new jobs and businesses, plus other social advances (e.g. social security, unemployment benefits, etc.).
If you want to compare both presidents, Hoover would be as dark as a black hole and Roosevelt as bright as the sun.
