What about the other studies that seem to say the opposite? Those are studies of income brackets, not studies of the flesh-and-blood human beings who are moving from one bracket to another over time. More than half the people who were in the top one percent in 1996 were no longer there in 2005.
This is hardly surprising when you consider that their incomes were going down while there was widespread hysteria over the belief that their incomes were going up.
Empirical studies that follow income brackets over time repeatedly reach opposite conclusions from studies that follow individuals. But people in the media, in politics and even in academia, cite statistics about income brackets as if they are discussing what happens to actual human beings over time.
All too often when liberals cite statistics, they forget the statisticians' warning that correlation is not causation. For example the New York Times crusaded for government-provided prenatal care, citing the fact that black mothers had prenatal care less often than white mothers -- and that there were higher rates of infant mortality among blacks.
But was correlation causation? American women of Chinese, Japanese and Filipino ancestry also had less prenatal care than whites -- and lower rates of infant mortality than either blacks or whites.
When statistics showed that black applicants for conventional mortgage loans were turned down at twice the rate for white applicants, the media went ballistic crying racial discrimination. But whites were turned down almost twice as often as Asian Americans -- and no one thinks that is racial discrimination.
Facts are not liberals' strong suit. Rhetoric is.