Lee Berger: These fossils have taught us two sort of big streams.  One is that that idea that there’s not more out there to be discovered is wrong.  Whatever they are, that idea is wrong.  We need to build a generation of explorers and field scientists and go out and find more of these. Because sitting — in the most explored area on this planet for those very things — is sitting these things, on the surface.  That’s one thing it taught us.  It’s not a lesson about human evolution.  It’s a lesson about human behavior.  A lesson about human evolution is that we don’t know what’s going on.  We thought we had this figured out.  We thought it was a relatively neat package.  Okay, we might have said, “It’s bushy here, it’s bushy there.”  This is saying something — there were other experiments that were so different from what our ideas were that there must be other stories going on.  This is not a bush, it’s not a tree, it’s like a braided stream of complexity that we also — it has taught us, regardless of what <i>Australopithecus</i> turns out to be in that braided stream of evolution, that we cannot use small bits and pieces to build a whole. If I had found any one area of anatomy of <i>sediba</i>, I would have probably named three or four different species from the different pieces.  The ankle would be an ape.  The rest of the foot would be a human.  The pelvis would be a human.  The spine would be an ape.  The arms would be an ape.  The hand would be a homo erectus.  The skull, the teeth would be the genus homo — homo habilis.  The brain and its back would be an Australopithecine, and front something advanced.  I mean, you can’t use parts to interpret the whole unless you have the whole.  We need more skeletons.