>>12536664Nah. There might be dozens, hundreds, or even thousands, of generations' separation between the person recording the video and the person portrayed therein. Given that every person born has on average several dozen de novo mutations, the number of genetic differences between the two people could be vast. Also, the apparently acephalic individual portrayed in the video may have perfectly normal siblings who were born in the same household. The difference would almost certainly be genetics, not environment.