Forget what you were told in history or computer science, this is the truth.
Long ago, in the days when all disks flopped in the breeze and the writing of words was on a star, the Blue Giant dug for the people the Pea Sea. But he needed a creature who could sail the waters, and would need for support but few rams.
So the Gateskeeper, who was said to be both micro and soft, caused to be fashioned a Dosfish, who was small and spry, and could swim the narrow sixteen-bit channel. But the Dosfish was not bright, and could be taught but few tricks. His alphabet had no A's, B's, or Q's, but a mere 640 K's, and the size of his file cabinet was limited by his own fat.
At first the people loved the Dosfish, for he was the only one who could swim the Pea Sea. But the people soon grew tired of commanding his line, and complained that he could neither be dragged or dropped. "Forsooth," they cried, "the Dosfish can do only one job at a time, and of names he knows only eight and three." And many of them left the Pea Sea for good, and went off in search of the Magic Apple.
Although many went, far more stayed, because admittance to the Pea Sea was cheap. So the Gateskeeper studied the Magic Apple, and rested awile in the Parc of the Xer Ox. And he made a Window that could ride on the Dosfish, and do its thinking for it. But the Window was slow, and it would break when the Dosfish got confused. So most people contented themselves with the Dosfish.
Now it came to pass that the Blue Giant came upon the Gateskeeper, and spoke thus: "Come, let us make of ourselves something greater than the Dosfish." The Blue Giant seemed like a humbug, so they called the new creature Oz II.
Now Oz II was smarter than the Dosfish, as most things are. It could drag and drop, and could keep files without becoming fat. But the people cared for it not. So the Blue Giant and the Gateskeeper promised another Oz II, to be called Oz II Too, that could swim fast in the new, 32-bit wide Pea Sea.
Then lo, a strange miracle occurred. Although the Window that rode on the Dosfish was slow, it was pretty, and the third window was the prettiest of all. And the people began to like the third window, and to use it. So the Gateskeeper turned to the Blue Giant and said "Fie on thee, for I need thee not. Keep thy Oz II Too, and I shall make of my Window an Entity that will not need the Dosfish."