My immediate reaction to this image was exasperation that the creator's intention for the image was to bother me until I figured it out. Indeed, once I looked at it I couldn't stop thinking about it! After reflecting for a bit I think that the multi-colored sphere represents all of the thoughts and experiences of human beings. When one of these experiences or thoughts is acknowledged or validated somehow, it is set free in the form of a piece of the cube of understanding which never really can be completed because there are so many sources to be drawn from. I don't really like it but I sort of see what she's getting at....