As an example of how a real artist understands what knowledge is needed to portray beauty, always read Liberty Meadows in GoComics.. Frank Cho understands the inside of living entities better than most “science” instructors ever will..
I am 85 years young and I have out lived all my teachers, but I have not lost the memories of their teaching, who by the way were also my parents who prepared me and my sisters for the lives we have enjoyed. They were not “teachers” they just lived as an example of what they too believed and expected of us. “Be responsible”. “Be curious” and ask “Why”. “.Ask it of yourself first”. Our children and their children also know this as normal in their lives.My favorite quote is: Genius may not be an option, but remaining ignorant is your choice". (anon)
The third frame from the left has the lady, from the shoulders up, off set slightly. This gives the opportunity to see a 3D effect when crossing your eyes and over lapping the adjacent frame.
This technique is as simple a method as possible to view 3D that there is. Too bad it does not cost an arm and a leg, and a special TV and special glasses. Then it might be more desirable to todays public.
73 yrs ago, when I was 10, I took 3d pairs, with my Box Camera, by just taking two pix of the same scene. I took the first pic then moving the camera for the second picture of the same scene about 5 inches to the side of the first pic.
I am 86 yrs and I still dip a finger in the jar as I pass it by.Yes, it has been available for a long time. Like the Incas had it.