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␈↓ ↓H␈↓␈↓βS␈↓∧ Artificial Intelligence Laboratory, STANFORD UNIVERSITY, Stanford, California 94305
␈↓ ↓H␈↓∧Telephone 415 497-4430␈↓ 	YSeptember 8, 1976




␈↓ ↓H␈↓Mr. Wayne Darwin
␈↓ ↓H␈↓World News Corp.
␈↓ ↓H␈↓19th Floor
␈↓ ↓H␈↓730 Third Ave
␈↓ ↓H␈↓New York N.Y. 10017

␈↓ ↓H␈↓Dear Mr. Darwin:

␈↓ ↓H␈↓        Enclosed␈αis␈α
the␈αpaper␈α
you␈αrequested.␈α
 Please␈αread␈α
it␈αcarefully,␈α
because,␈αas␈α
I␈αrecall,␈α
you␈αhad
␈↓ ↓H␈↓some misconceptions when we talked on the phone.


␈↓ ↓H␈↓Sincerely,



␈↓ ↓H␈↓John McCarthy
␈↓ ↓H␈↓Director
␈↓ ↓H␈↓Professor of Computer Science