"( .... ) Darwin clearly understood the threat of directed variability to his cardinal postulate of creativity for natural selection . He explicitly restricted the sources of variation to auxiliary roles as providers of raw material , and granted all power over the direction of evolutionary change to natural selectionÂ… . He recognized biased tendencies to certain states of variation , particularly reversions toward ancestral features . But he viewed such tendencies as weak and easily overcome by selection . Thus , by the proper criterion of relative power and frequency , selection controls the direction of change : Â “ When under nature the conditions of life do change , variations and reversions of character probably do occur ; but natural selection , as will hereafter be explained , will determine how far the new characters thus arising shall be preserved ( p. 15 ) ( Gould 2002 : 145 )"
"And you still have provided no evidence ."
"Darwin clearly understood the threat of directed variability to his cardinal postulate of creativity for natural selection ."
"And you still have provided no evidence ."