First of all congratulations to Rajan on being selected. Chance of getting to present the papers in a NASA seminar is something we can only dream of, so kudos.

I haven’t seen or read his theories and thus I cannot vouch or reject his ideas. However, you have to understand that Newton’s theory has been basis of a lot of scientific advances and inventions that have proven that the theory works.  

As for your hill transportation theory summarized in above article, that sounds like oversimplified version of how a roped elevator works (with counter weight). I am sure there is more to the theory than what is explained above as it sounds like you would put a heavy object at the top of the hill to lift a lighter object at the bottom of the hill. However, somebody has to lift this heavy object back to the top if we want to continue with the system.  

This is very vague; I’d appreciate if somebody can post his theory here. I couldn’t find anything.