And still other customs may have entirely invisible or forgotten or unknowable benefits, which we might not even appreciate until after they were gone. How many social benefits were attached to the evening family meal that no one could have predicted or appreciated before women's liberation and the modern economy eroded its prevalence? Indeed, some recent studies indicate that a significant portion of the obesity "epidemic" is attributable to the decline in home cooking, predominately by housewives. Just imagine the response if critics of feminism had said, "If women join the workforce, kids will get fat and cost us billions in health care."