RK ji,
For a moment, imagine yourself in Akbars' time(I will give you my time machine to travel back). And now just try to explain the folks in that timeperiod about cellphones, computer, air conditioner, airplanes, spaceships and that we can travel to moon and other stars. They will laugh at your fantasies too just like you are doing now..
I am not saying that time machine is really a practical theory but after knowing what man has done in last 100 years, I have stopped saying that something is impossible or a fantasy. Talking about egyptians, why not talk about pyramids too which they made. Its still a mystery that how the pyramids were so accurately mapped to the various stars and constellations in the sky. Pls go thru this link and you will know the depth of pyramids science:
http://www.infinitetechnologies.co.za/articles/thegreatpyramid.html
As for the statement that man has always fantasized about future and not past, just tell how would you know bout Ramayan, Mahabharata and our ancient culture if it was not for the fact that we are equally or rather more equally interested to explore our past. Science was also pretty advanced during the time of ramayana which is all documented specially the vimanas technology. Check this article on vaimanik shastra by a scientist of Aeronautical Society of India :
http://www.bibliotecapleyades.net/vimanas/vimanas.htm#menu
Rather than debunking any scientific theory, it would be better to think on those terms and figure out the possibilities. Still there is no harm in going to a Pandit with a tota to know your future if that sounds more fascinating to ppl