Written in Stone

While the Big Bang was cooling and the laws of physics were congealing, authorities remained undecided whether God would provide comfort against the expanding darkness. To answer the question, one planet was seeded with humans equipped with conviction receptors tweaked either to an absolute faith in or complete denial of God. If, after a suitable period of mingling between the two groups, believers prevailed over doubters, God would be established in the firmament. If not, God would be scrapped.