قال عالم الآثار " راندال وايت " مستفيداً من ابحاثه وجهة نظر تقول : ان استطاع أسلافنا منذ 40 ألف سنة مضت أن يروا ما صنعه أحفادهم لن يستطيعوا ان يفهموا ذلك على الاطلاق
And the anthropologist Randall White has made a very interesting observation: that if our ancestors 40,000 years ago had been able to see what they had done, they wouldn't have really understood it.