[Southack]

"A second obvious difference is the quantum nature of DNA. You compare the four bases to binary switches which is completely wrong. The chemical nature of each of the bases is not binary. A reaction between a base and it's complement on another strand or on tRNA, for example is never completely on or off. A programmer may be able to approach this phenomenon with some sort of fuzzy algorithm, but there is still something fundamentally different."

Your logical error here is that you are presuming that all human computer software programming is digital. Analog computers can work with both analog and digital input as well as analog algorithms. By definition, analog input and algorithms have a quantum state that can be neither on nor off, just as does DNA.

That's appropriate, after all, since DNA is an analog processing system, anyway.

Hence, the analogy of human computer programming to that of genetic DNA programming is completely valid and rock solid; one simply has to be aware that there is more to the human computer world than mere digital processing.

[Nebullis]

Analog computers can work with both analog and digital input as well as analog algorithms.

It's still a simple imitation. That's why there is an increased use of biomolecules for computing uses. It's because digital or transistor systems, or any other systems don't approach the level of DNA systems. Good try, though.