IIRC, amino acid chains have been formed in laboratories who's conditions mimic primordial earth theories. These are the building blocks of life.
BULL! They've been exposed to environments that have never existed and even then they NEVER formed life only 'mimiced' it.! They failed to get life from no life.
This has nothing to do with fitness. IMHO, humans have removed most of the selecting factors from themselves.
So you are saying there is more to 'evolution' than science.....Oh God forbid...if you'll pardon the expression.