I think those a few who chose to leave the cave and see the higher reality is representing their wish, their hope that they want to see more from their life. Not just sitting inside of the cave to see things happening around themselves. And they are free from the limit of the getting knowledge.
There should have distinction between those who want know more about truths and people who just satisfied to see the shadows as the reality. I think the distinction is very important, because the higher educator that is the few who wants to see more reality.