Persistence of vision woooo

Persistence of vision is a controversial theory that the brain retains an image for a fraction of a second  (0.04 of a seconds) the eye see everything that goes on but the brain takes a snapshot every 0.04 of a second and makes you see it then the image starts to fade and as it is fade the brain takes another snapshot and fills in the gap of what happened in between the 0.04 seconds