Humans aren’t so special after all: The fuzzy evolutionary boundaries of Homo sapiens

Ever since Darwin, the researchers who study human evolution have been preoccupied with the characteristics that set humans apart from the other great apes: our large brains, bipedalism, hunting, abstract thought, and the use of technology.

It’s long been assumed that these features came bundled together, according to William Kimbel, Director of Arizona State University’s Institute of Human Origins. Kimbel conducts fieldwork studies in East Africa in search of the origins of our species, and he thinks that shedding the assumption of the “package deal” can open up new clues about the origin of our lineage.

Without the benefit of a fossil record, it’s reasonable to think that that these features evolved in tandem, but “it’s a model that remains firmly entrenched in paleoanthropology today,” Kimbel told Ars Technica—even though a picture is starting to emerge that looks very different.