Scientists believe that this evidence marks the first signs of human creative thought. These simple shells are the work of the world's earliest designers. The fact that these artifacts have no practical function as tools or weapons demonstrates their symbolic or cultural content. Even in its simplest form, jewellery has always been about self expression. Professor Henshilwood who headed up the excavation says "whether you are wearing a Bulgari necklace or a rosary you are making a statement".