In Ramayan it is written existence of aeroplane(pushpak viman) which Lord Rama used to come back from Lanka. This pushpak viman is made out of mantra sakthi. Now we are making the aeroplanes with yantra sakthi. without the existence of pushpak viman valmiki cannot imagine to write about this (pushpak viman) 100000 years ago. This itself is a evidence for the existence of Ramaya. Now Since has not developed to the extent of olden days mantrasakthi. It is slowly developing. If Ram sethu is there for another 200 years Man can proove it is built by Ram.
