Small-brained and small-bodied

What are the primary differences between Australopithecus Sediba and Homo Naledi?

What made Raymond Dart and his followers believe that early hominins were violent and aggressive (killer apes)?

What evidence eventually disproved his hypothesis?

Why were ‘small scientists’ needed in the excavation stage for the Naledi cave?
Why were Homo Naledi classified in the genus Homo rather than Australopithecus? Be sure to discuss both skeleton and cranium.

How many bones and fragments were eventually pulled out of the Homo Naledi cave?