?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=The+unitary+hypothesis%3A+A+common+neural+circuitry+for+novel+manipulations%2C+language%2C+plan-ahead%2C+and+throwing%3F&rft.creator=Calvin%2C+Prof+William+H&rft.subject=Evolution&rft.subject=Evolutionary+Psychology&rft.description=Plan-ahead+becomes+necessary+for+those+movements+which+are+over-and-done+in+less+time+than+it+takes+for+the+feedback+loop+to+operate.+Natural+selection+for+one+of+the+ballistic+movements+(hammering%2C+clubbing%2C+and+throwing)+could+evolve+a+plan-ahead+serial+buffer+for+hand-arm+commands+that+would+benefit+the+other+ballistic+movements+as+well.+This+same+circuitry+may+also+sequence+other+muscles+(children+learning+handwriting+often+screw+up+their+faces+and+tongues)+and+so+novel+oral-facial+sequences+may+also+benefit+(as+might+kicking+and+dancing).+An+elaborated+version+of+the+sequencer+may+constitute+a+Darwin+Machine+that+spins+scenarios%2C+evolves+sentences%2C+and+facilitates+insight+by+offline+simulation.+An+example+is+given+of+an+evolutionary+scenario+from+an+apelike+ancestor%2C+demonstrating+the+transition+behaviors+and+growth+curve+considerations+that+any+such+theory+needs+to+have%3B+this+particular+scenario+(involving+throwing+improvements)+also+suggests+an+explanation+for+the+puzzling+design+of+the+Acheulean+%22handaxe.%22%0A&rft.publisher=Cambridge+University+Press&rft.contributor=Gibson%2C+Kathleen+R.&rft.contributor=Ingold%2C+Tim&rft.date=1993&rft.type=Book+Chapter&rft.type=PeerReviewed&rft.format=text%2Fhtml&rft.identifier=http%3A%2F%2Fcogprints.org%2F3212%2F1%2F1993Unitary.htm&rft.identifier=++Calvin%2C+Prof+William+H++(1993)+The+unitary+hypothesis%3A+A+common+neural+circuitry+for+novel+manipulations%2C+language%2C+plan-ahead%2C+and+throwing%3F++%5BBook+Chapter%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F3212%2F