What captures the imagination is that dwarfing might have occurred in humans, who often buffer themselves from natural selection through cultural means such as tool production and fire-making, both evident at [the fossil site].
"Daniel E. Lieberman" is a paleoanthropologist at Harvard University, where he is the Edwin M Lerner II Professor of Biological Sciences, and chair of the Department of Human Evolutionary Biology. He is best known for his research on the evolution of the human head and the evolution of the human body.More Daniel Lieberman on Wikipedia.
My take is that this is not a home run yet, because they haven't really figured out what this is. But there's good evidence that supports their hypothesis nicely.
There's more than one individual, so they can refute the hypothesis that this is just some kind of freak. Also, the data suggest that [the remains are from] a fairly long time span, so that makes it tough to say that this is [due to some sort of disease].