Ok so I want to bounce around an idea Ive had for awhile on the existence of Platonic forms. Here is some background info if you are not familiar with the subject.
Theory of Forms - Wikipedia, the free encyclopedia
Universal (metaphysics) - Wikipedia, the free encyclopedia

Imagine a scenario where there are only ten (for simplicities sake) people left on earth. Civilization has collapsed and humans are scavengers, cannibals, etc. Out of the ten people not one of them has knowledge of the concept "good" or behave in any manner that can be deemed as "good". Does the quality of "goodness" still exist?

Even though the universal(good) is not inherent in any particulars(survivors) the possibility of good still exists therefore a universal can be abstracted from a particular and still exist even though it is not represented by any particulars.

Similarly imagine the color purple. Lets say in this theoretical world there are no particulars that represent the color purple yet the colors red and blue exist. It is possible to mix red and blue to make purple so even though purple doesn't necessarily exist in any particular the possibility of purple exists, therefore purple exists.

Therefore universals can exist without being present in particulars which suggests the theory of forms is valid.

I would appreciate your criticism and ideas, thank you.