Vow. Our earlier rishis new this theory of evolution much ahead of the scientific age & hence the das avataras this means they were very knowledgeable of the humanity as a whole. Without any scientific machines or anything they could know this.
So in their books they mention Lord Rama as god then why this disbelieveing them. If they knew of all the things prior that means they were long sighted & that means that Lord Rama existed & is existing.
