Our being has the characteristic of data creation with-in and with-out the mind. We create concepts at every turn. We replace the real things with its concepts. We also mistake concepts for the real things.
Plato was one of the first to create the idea of ideal forms that all else is based upon. Real cats are but shadows of the ideal cat, where the ideal cat is the model for the cats of the world. But Plato did not have the benefit of current understanding. Cats did not always exist. It would be safe to say cats did not exist two billion years ago. Did the ideal form already exist then without a single cat to be in existence? What is the point of having the ideal form of cats if there were none to be?
The more likely answer would be that our ideal form of cats comes from our experience and observation of cats by way of blending all that is considered ideal of a cat, rather than something like an ideal form existing before we start.
This is like the present state of Apple’s App Store. It is far from ideal but we keep bits we like here and there and remove other bits that don’t seem to work. Call it “tweaking”, “evolution” or some other term you like. Ideal forms are not there. Only the concept of ideal forms exist. We must not mistake the concept for the real thing or for the verbal form of it.