Before the digital LCD screen this kind of exact positioning was impossible. While some of these effects could be approximated with the aid of a computer, images created in the real world have a vitality to them that a computer anipulated image cannot approach. It is the difference between the real and the artificial. I believe the real world has much more power. Again this is a radical development.
Immediate feedback is vital to learning.
In a personal note I have spent years trying to shorten the time between taking pictures and seeing the developed images. I have used black and white slides and color slides that I processed immediately, along with instant Polaroids. When not using any of these techniques, I developed negative film on the same day it was shot and made contact sheets to get some idea of what I had just done. There are many psychological studies that point to the importance of feedback in learning. People who aimed bullets at a target, but were not told where the bullets hit until later, could not learn quickly.