I've heard that the Vimānavatthu and Petavatthu are considered later additions to the canon by scholars.
Does anyone know on what basis this judgment is made? Is it a matter of doctrine because these tales seemingly trivialize the workings of kamma?
Also, regarding the Jātakas, I've heard that sections of them are considered to be later additions. Is there any consensus on what those are? I've read some jātakas referenced in the four nikāyas, and the earliest classifications of the teachings in the suttas have the jātakas included:
"suttaṃ, geyyaṃ, veyyākaraṇaṃ, gāthaṃ, udānaṃ, itivuttakaṃ, jātakaṃ, abbhutadhammaṃ, vedallaṃ"
"dialogues, narratives of mixed prose and verse, explanations, verses, spontaneous exclamations, quotations, birth stories, amazing events, question & answer sessions"
from MN 22: Alagaddūpamasutta -
http://studies.worldtipitaka.org/tipitaka/9M/3/3.2
http://www.accesstoinsight.org/tipitaka ... .than.html
