Glass Prisons can hold homicidal maniacs. Hannibal Lecter- Silence of the Lambs; Magneto- X-Men: The Last Stand Raoul Silva- Skyfall; John Harrison or Khan- Star Trek: Into Darkness; Stitch- Lilo & Stitch- stitch cracked me up!
The oldest known flute, carved from a griffon vulture bone approx. Found at Hohle Fels Cave in German. The image of a cave man as a brute should be changed to that of someone who loves music and creates graceful art.