evidence: This is still hard for some skeptical writers and observers to believe. They insist that the primitive methods used by early modern and ancient Egyptian stone masons were not enough and that it must have been with more advanced equipment that the ancient Egyptians bored through solid granite. They argue that this is evidence that the ancient Egyptians and other civilizations were much more technologically sophisticated than is currently believed. While it is possible that more advanced technologies could have been developed by earlier civilizations then anticipated, there does not appear to be much reliable evidence to support this idea. If the ancient Egyptians did cut through granite with equipment such as electric drills or lasers or similarly advanced technology, these hewn granite slabs are the only evidence for it that we have. So far, there is no indisputable evidence of physical remains of electrical batteries or wires or anything else that would suggest that the ancient Egyptians used technology that was more advanced than what is expected for that period. [...] There is one case which some proponents of the idea that ancient Egypt was more advanced than contemporary archaeology would suggest - evidence that the ancient Egyptians used light bulbs. The temple of Hathor at the Dendera complex in Egypt contains several stone reliefs that appear to some observers to be a light bulb.