They conclude, “there is something besides mutations and survival of the fittest needed to explain evolution.”
The engineering marvel that is the giraffe, long neck and all, was intelligently designed.
Wherever you look in the history of life you stumble upon overwhelming evidence for design.
Often a given biological system dramatically limits the search space of possible mutations in useful ways.
You might think that such severe impediments to prebiotic RNA formation would be enough to discourage fanciful proposals of RNA replication.