Pelvic Floor Size Affect Human Evolution

Throughout his treatise, Gould stressed that evolution is based upon irrefutable scientific knowledge. For example, evolution is observable through isolated occurrences in laboratory experiments and nature; most species are all interconnected via homologous structures, and fossil evidence supports evolution. Furthermore, since the publication of his essay, new evidence supporting evolution has been discovered. Most recently, a study was published that announced the amount of caesarean births due to narrow pelvic size has increased (Caesarean Births 'Affecting Human Evolution', 2017). If not for caesarean birth, the genes associated with a narrow pelvic floor would have been eradicated through natural selection, meaning the mothers would have died during childbirth.
This study was particularly intriguing because as pelvic floor size decreases, humans cranial size increases; this adds a new element to the theory of evolution—humans, through technology, can alter their own evolutionary