Isaac Newton, great English physicist, mathematician, astronomer, philosopher, scientist, discovered the law of motion, law of Gravitation, theory of color, reflecting telescope…. and cat flat. Newton never married and had few friends, but he did keep a dog and cat for companionship. Newton, working on laboratory light experiments, was repeatedly foiled by unwanted light from a cat pushed open door. Not wanting to banish the cat, Newton cut a hole in the door, and attached a piece of felt to block out unwanted light. Since Newton and the cat were now happy, the world's first cat flap solved the light problem nicely. Later, when the cat had kittens, he did not want this event be repeated, so Newton cut several more kitten sized holes in the door. Of course, since the kittens simply followed their mother through the larger hole, the smaller hole went unused. Newton provided the extra doors anyway. This just shows no matter how giant your brain is, logic can still escape you. Alternately, maybe he just found all those little cat flaps amusing.
HIHI. BUT IT IS VERY INTERESTING TO ME THAT IF I DID SUCH KIND OF THINK EVERYBODY WOULD SAY ME THAT YOU ARE MAD WHY DO YOU OPEN THE HOLE IN THE DOOR.BUT IF NYUTON DO EVERYBODY SAYS HE IS GENIUS