We see today that there are many authors who write novels which contain fantasies (imaginary stories). I haven't really heard of such thing's in past.
If people can imagine now then why can't in the past? This thinking also takes me wonder if the Puranas (stories about Gods and Vedas) are actually saying the real things or they are fiction based novels.
Please don't consider me an atheist, I am a true believer of God but this is a confusion I am having. If there were known novels/fantasies then may be we can decide by comparing the writing style, story telling style, or event description, etc with that of religious texts.
If the reply is that similar stories being covered in many books so it should be true and not fantasy, then that can be also be true in case of novels. For example, there was a famous novel series Chandrakanta Santati and upon it's success many other series were made by other writers by taking the same theme and mostly the same characters as well.