?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Does+the+Mind+Piggy-Back+on+Robotic+and+Symbolic+Capacity%3F&rft.creator=Harnad%2C+Stevan&rft.subject=Dynamical+Systems&rft.subject=Perceptual+Cognitive+Psychology&rft.description=+Cognitive+science+is+a+form+of+%22reverse+engineering%22+(as+Dennett+has+dubbed+it).+We+are%0Atrying+to+explain+the+mind+by+building+(or+explaining+the+functional+principles+of)+systems+that+have%0Aminds.+A+%22Turing%22+hierarchy+of+empirical+constraints+can+be+applied+to+this+task%2C+from+t1%2C+toy+models%0Athat+capture+only+an+arbitrary+fragment+of+our+performance+capacity%2C+to+T2%2C+the+standard+%22pen-pal%22%0ATuring+Test+(total+symbolic+capacity)%2C+to+T3%2C+the+Total+Turing+Test+(total+symbolic+plus+robotic%0Acapacity)%2C+to+T4+(T3+plus+internal+%5Bneuromolecular%5D+indistinguishability).+All+scientific+theories+are%0Aunderdetermined+by+data.+What+is+the+right+level+of+empirical+constraint+for+cognitive+theory%3F+I+will%0Aargue+that+T2+is+underconstrained+(because+of+the+Symbol+Grounding+Problem+and+Searle's+Chinese%0ARoom+Argument)+and+that+T4+is+overconstrained+(because+we+don't+know+what+neural+data%2C+if+any%2C+are%0Arelevant).+T3+is+the+level+at+which+we+solve+the+%22other+minds%22+problem+in+everyday+life%2C+the+one+at%0Awhich+evolution+operates+(the+Blind+Watchmaker+is+no+mind-reader+either)+and+the+one+at+which%0Asymbol+systems+can+be+grounded+in+the+robotic+capacity+to+name+and+manipulate+the+objects+their%0Asymbols+are+about.+I+will+illustrate+this+with+a+toy+model+for+an+important+component+of+T3+--%0Acategorization+--+using+neural+nets+that+learn+category+invariance+by+%22warping%22+similarity+space+the+way%0Ait+is+warped+in+human+categorical+perception%3A+within-category+similarities+are+amplified+and%0Abetween-category+similarities+are+attenuated.+This+analog+%22shape%22+constraint+is+the+grounding+inherited%0Aby+the+arbitrarily+shaped+symbol+that+names+the+category+and+by+all+the+symbol+combinations+it+enters%0Ainto.+No+matter+how+tightly+one+constrains+any+such+model%2C+however%2C+it+will+always+be+more%0Aunderdetermined+than+normal+scientific+and+engineering+theory.+This+will+remain+the+ineliminable%0Alegacy+of+the+mind%2Fbody+problem.+&rft.publisher=Addison+Wesley&rft.contributor=Morowitz%2C+H.&rft.contributor=Singer%2C+J.&rft.date=1994&rft.type=Journal+(Paginated)&rft.type=PeerReviewed&rft.format=text%2Fhtml&rft.identifier=http%3A%2F%2Fcogprints.org%2F1594%2F1%2Fharnad95.mind.robot.html&rft.identifier=++Harnad%2C+Stevan++(1994)+Does+the+Mind+Piggy-Back+on+Robotic+and+Symbolic+Capacity%3F++%5BJournal+(Paginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F1594%2F