In late December 2014, Ram Prasad Gandhiraman, a scientist at
NASA's
Ames Research Center, started a petition to prevent the paper from being presented at the conference. By 31 December, 220 scientists and academics had signed the petition. Gandhiraman criticised the paper as pseudo-science and said that mythology should not be mixed with science. S. M. Deshpande, a professor at the
Indian Institute of Science, Bangalore, who has written a paper with four others on aircraft in Sanskrit texts, said that we should not reject such claims as pseudoscience outright but examine them with intellectual curiosity. His paper, however, states that the aircraft described in the Vaimānika Shāstra text would not be capable of flying, and the text itself cannot be traced to any date before 1904.
Roddam Narasimha, director of
National Aerospace Laboratories (NAL), said that there is no credible evidence that aviation existed in ancient India. He added that the Vaimānika Shāstra text has been studied scientifically, and the consensus is that descriptions in the text are unscientific.
Economist and
Nobel laureate Amartya Sen commented that some evidence is required in the controversial claims made in the
Indian Science Congress regarding the achievements of ancient Indians. He said, "The idea that human beings can fly is known to human beings from birth. The idea that human beings might be able to be on the air has been talked about a lot. If that was true, then we would like to find some evidence." Further, he elaborated, "As our epics show, Indians have thought about flying for a long time. But it would be fanciful to say that India invented the aeroplane. If ancient India had airfare technology, we would like to see some evidence. I agree there are a lot of claims that have nothing to do with achievements." ==Support==