actually the amazing discoveries of the dna code and it's numeric system is very scientific. It is quite convincing of an author who must have made it.
This article should blow your mind: (This is why DNA's code is impressive, but not miraculous.)
Genetic alphabet bases explored
Mr Gardner says his simulations using Massey’s supercomputer found that in the evolutionary history of all species, when mutation rates were high, four was the optimum number, allowing species to evolve more quickly to fit the environment at the time.“ Four was the ideal size for that particular period in the evolution of all species. If the decision was made again, a different alphabet would be used.”
He says for a period of low mutation, such as now, a six-letter genetic alphabet would be more efficient.