http://www.youtube.com/watch?v=AUWapg2EPagIt is an ad. But it isn't Photoshop. It is quickened only.
As a child, we checked this with a little wooden plate fenced by
eight razor blade, using different snails.
Three of four have escaped unhurt.
(75% retention rate. I know people who would be happy with such RR.)It has happened in the 50's. There were no cell phones with camera,
no youtube, no internet, no nothing.
Our teacher produced this in every year for the 3rd grades.
He propagated the evolution and no parents protested.
Time is going on. People can retrograde.