I was disappointed by Professor Keith Fox’s negative assessment (en May 2017) of Douglas Axe’s book Undeniable. Even though ‘almost all practising scientists affirm the basic facts of evolution’, the number of qualified scientists who reject evolution is growing. I commend the book Evolution’s Achilles’ Heels, which features nine PhD scientists qualified in disciplines such as biology, cosmology and genetics. They have not ‘stopped asking questions’ but would disagree with the claim that the evidence ‘overwhelmingly supports the evolutionary paradigm.’