Rumraket wrote:

TJ is not 3 letters wrote:Human DNA is like a computer program but far, far more advanced than any software ever created. It seems amazing to me now that one great teacher made chemistry endlessly fascinating while I found biology totally boring. (Gates, The Road Ahead, Penguin: London, Revised, 1996 p. 228)

Interesting quote from a software guy.

One should not put too much emphasis on analogies.

A code is a symbol which stands in place of a symbol. The four letters CAGT most definitely form a code, being symbols for the names of the four major components of DNA. The names guanine, adenine, thymine and cytosine are not codes: they are primary symbols. Primary symbols stand for real things and not for symbols. The real physical entities guanine, adenine, thymine and cytosine are not codes. If anyone wants to call them codes, let them point to the symbols which might be replaced by these 'codes'.

A computer code is a set of numerical values sufficient and necessary to the production of an end state from an initial state.

DNA is necessary but not sufficient to the production of an end state from an initial state.