The old saying does often seem to hold true: the rich get richer while the poor get poorer, creating a widening gap between those who have more and those who have less. The sociologist Robert K. Merton called this phenomenon the Matthew effect, named after a passage in the gospel of Matthew. Yet the more closely we examine the sociological effects of this principle, the more complicated the idea becomes. Initial advantage doesn't always lead to further advantage, and disadvantage doesn't necessarily translate into failure. Does this theory need to be revisited?Merton's arguments.