A theory of abstraction.

The ATLAS SOCIETY OF “A Theory of Abstraction” was originally published in Cognition and Brain Theor y, 1984, 7 (3 & 4), pp. 329–357. Copyright © 1984 by David Kelley All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, mechanical, electronic, photocopying, recording or otherwise without prior written permission of the publisher . Information or permission requests should be addressed to The ATLAS SOCIETY, 1001 Connecticut Ave. NW, Suite 830, Washington, DC 20036. Printed in the United S tates of America. Reprinted 2010.