He far exaggerates the rate of mutational drift. Even if this had some truth to it, many centuries would have to pass before becoming apparent. It’s also an unnecessary theory; social evolution can far outpace the genetic kind.
I don’t agree with that part about mutational drift. For sure social outlooks, behaviors, trends and opinions etc occur rapidly.
We are not speaking of random mutations leading to a new species here. That’s takes millennia. We are talking of the selection and concentration of already existing genes to create basically a new breed.
Such as in selecting traits to get a new breed of dog: from breeding business.com:
“ To create a new dog breed, a dog breeder must establish a set of clearly measurable and visible traits known as the breed standard. It is a list of characteristics that formally describe the breed to an audience. The breeder needs to build up the new dog breed over several generations, generally taking decades. ”.
A new breed of dog is still a dog, can mate and reproduce with other breeds. Yet anyone with even a slight knowledge of nature knows breeds can have pronounced differences in size, height, temperament, intelligence etc.
When was the last time anyone heard of a pack of well fed and treated Golden Retrievers turning on their owners, killing then eating them (answer never)? I can think of 2 examples in the last year or 2 where that happened to Pits.