Well....
It is true that in History there is no great jump in mans technology capability prior too the Industrial Reveloution. On the other hand there is intrest in pre Ancient Civilisation history and universal ideas of us sharing basic motives in our belief systems...ie gods, creating man (Ra's tears, man coming out of giants armpits created by sweat). To futher counter balance we could also say that if man was visited by aliens what would be the nature of the vist? Would it lead to a technological jump, hault, or down sloping slump?
Little solid evidence has been found, and the little 'valid' evidence there is, is questionable to say the least. Ideas of statues looking like aliens, such as in ancient Japan or Aztec/Mayan artifacts are very invalid. This being due to opinon determining this and modern standards. It is also clear to say that by comparing our space suits as ones bieng worn by ets, would also be not well founded, as despite man's leaps and bounds we still have functional, yet arcahic desighns for such garmets.
On the other hand myths and stories do show simmulatrities on a global scale. For example how the gods work. Take the Egyption, Greek and Norse. Zeus imprisons Cronos and co. in Tartarus after a clash of titans and gods, and the conflict eill arise again. In Egypt Horus avenges Osirus' murder by fighting Seth to become Pharaoh and in Ragnarock the gods will fight the giants. All these share simmularities. Highly likely this is a product of coincidence, or something in the human psyche. Or a product of ancient globalisations. Though the basic elements of these stories, could just be the product of a retelling and retelling of old stories of events witnessed by man, commited by other 'beings'.
In conclusion these are all hypothesis and are merely ideas for futher investigation. There is always the answer the aliens or other 'beings', but also the answer could lie in what we already know and need to investigate, or the answer is something we have all underlooked and not as yet found it.
