After studying entire Mahabharata text for 20+ years, I have following observations for Mahabharata text in general and Shanti Parva in particular…
– Shanti Parva preserves the history of ancient India (numerous plots of social, philosophical and chronological evolutions and revolutions) like none other. Anushasan Parva continues without any disconnect what Shanti parva intends to do.
– I also began with the assumption (based on empty speculations of high ivory towers of academia) that Shanti Parva could be interpolated or inserted later on (by later on .. I mean some 1000+ years afterwards… 100 years +/- is very acceptable as current Mahabharata text has 4 recensions).
I am convinced that Shanti parva is not interpolated. There can be chapters or specific verses that could be interpolated.
– All parvas of Mahabharata has repetitions of events from other parvas including events not even remotely connected with Mahabharata. This is very consistent with the theme of Vyasa (Dharma, Artha, kama, Moksha)…..”Prajwalitah jnanamaya pradipta”
– Shanti is very much consistent with methodology, construction and specific Mahabharata chronology. Anyone artificially disregarding Shanti parva is in for a rude shock in comprehending (1) Chronology of Mahabharata instances (2) Dating of Mahabharata and (3) the very essence/objective of Mahabharata.