and very many here do not have young ears...
physiology and psychology of hearing
That is my interpretation of the video, but he named it:
The answer is no, we knew that, but some interesting conditions mentioned explaining why in this video from a recording engineer.
Congenital amusia, or tone deafness, the inability to determine if one note is higher than the other, affects 4% of the population; that is 1 in every 25 people- wow.
And yet they may still own a high-end kit.