material efficacy

" 'The doctrine of the material efficacy of prayer reduces the Creator to a cosmic bellhop of a not very bright or reliable kind.' -Herbert J. Muller, educator, historian, and author (1905-1980)

Herbert J. Muller (1905-1980) was an American historian, academic, government official and author. He was educated at Cornell University. He taught at Purdue and Cornell, served in the Department of State, the War Production Board, and frequently lectured abroad.

Religion and Freedom in the Modern World
Does religion promote or impair the cause of freedom? Herbert Muller attempts to answer this question by surveying the social effects of religion, focusing upon the last 150 years of Christianity. "

If the doctrine of material efficacy of prayer does reduce the Creator to a 'cosmic bellhop' He wouldn't be the Creator. Unless prayer does have material efficacy The Creator couldn't have created anything.