TY - RPRT TI - A brush fire feedback loop for the ramp-like rise in hominin brain size that began 2.4 million years ago AU - William H. Calvin PY - 2016 DO - 10.1101/053827 UR - https://www.biorxiv.org/content/10.1101/053827v1 ID - 10.1101/053827 ER -