She highlights concerns about the methodology of Kettlewell's experiments and suggests that these issues could invalidate the results obtained, ignoring or disparaging evidence supporting natural selection while repeatedly implying that Kettlewell and his colleagues committed fraud or made careless errors.
No libro destácanse sospeitas sobre a metodoloxía dos experimentos de Kettlewell e suxiren que estes aspectos podían invalidar os resultados obtidos, ignorando ou menospreciando as moitas evidencias que apoian á selección natural, mentres que repetidamente se implicaba que Kettlewell e os seus colegas cometeran fraude ou erros neglixentes.