Quote Originally Posted by bu villain View Post
Random mutations yes, but also in natural selection which is absolutely NOT random.
I'm not sure what this proves. It sounds like in your analogy the sentence is a genetic sequence and each letter is a gene. However if that's the case it doesn't make sense because you can change a single gene in a genetic code and have a great effect (positive or negative). Thousands of diseases are caused by a single gene. Additionally there is a perfect English sentence but there isn't a perfect genetic code. If you start with a random assortment of letters and do enough random mutation you absolutely could get a perfect English sentence but you are trying to take something that is perfect and make it more perfect. Of course that's impossible.
How exactly does natural selection know if a genetic change is successful? What feedback does it get? It has to make random changes to even start to evolve.

In order to improve the genetic structure, it has to make changes to the code itself. Mutations are either neutral or harmful - very rarely has one been shown to be even minorly beneficial, and none have shown the steps between species.

Diploid organisms (plants and animals) have two copies of each chromosome. Change just one gene and see what happens.