Probability calculations show that complex molecules such as proteins and nucleic acid (RNA and DNA) cannot possibly come into being separately and by chance.
Prominent evolutionists admit this. For example, Stanley Miller and Francis Crick's colleague from San Diego University, the well-known evolutionist Dr. Leslie Orgel, says:
It is extremely improbable that proteins and nucleic acids, both of which are structurally complex, arose spontaneously in the same place at the same time. Yet it also seems impossible to have one without the other. And so, at first glance, one might have to conclude that life could never, in fact, have originated by chemical means.82
82. Leslie E. Orgel, "The Origin of Life on Earth," Scientific American, Vol. 271, October 1994, p. 78.