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 Masseys 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.
thanks for that article...no matter how much the dna code is attempted to be diminished it is still more complex than a computer code. Really take a look at the functions it sets in motion; a complete and highly efficient factory called our bodies. Nothing man has built even comes close. When you see a realitively simple thing like a painting of a person you know that someone had to paint it. How much more is that true for our bodies. Our darkside is always trying to makes us doubt, but inside we know that there is a Creator simply from logic.