Palaeoanthropologists have yet to pinpoint how Homo evolved from Australopithecus. I propose niche construction ending predator ambush and stalking attacks, white sclera, and ultrafast team cognition were key.Human white sclera allows the quick, distant detection of line-of-sight. This is unique. In other primates, predators eliminate conspicuous-eyed individuals. Consequently, nonhuman primates have coloured sclera, hiding gaze direction broadcasting. Recognizing line-of-sight split-second from a distance enables the ultrafast detection of attention shifts that support intercoupling cognitions (cognitive alignment, shared intentionality, and split-second coordination). Under certain conditions, such split-second coordinated teams can niche construct predator-shunning safe habitats. Once shunning replaces hunting, it stops white sclera targeting, allowing it to persist.Constructing predator-safe habitats ended the “landscape of fear” that limited Australopithecus foraging, health, and cognitive/cultural development. Once shunned and freed from fear, these safe habitats allowed previously “wheel-clamped” cognitive potentials, including social learning, to flourish, revolutionizing hominin capacity for cultural evolution and cumulative culture. Thus, predator-safe niche construction transfigured Australopithecus’s phenotype into Homo. White-eyed australopiths, I argue, were the first humans.