Who said, "the children of successful and cultured parents test higher than children from wretched and ignorant homes for the simple reason that their heredity is better"

the technology changed agriculture in an impacting manner since many people left the field work by a cellular or other technological appliances

i believe the answer is: returns on investments, no wages

people who belong in upper class society would most likely get there by obtaining multiple source of income, which a certain percentage of ownership for businesses. since most of them are job creator, they would most likely get their money from profit, not wages.