Introduction

article Free AccessIntroduction Share on Author: Henry Lieberman Media Laboratory, Massachusetts Institute of Technology Media Laboratory, Massachusetts Institute of TechnologyView Profile Authors Info & Claims Communications of the ACMVolume 40Issue 4April 1997 pp 26–29https://doi.org/10.1145/248448.248455Online:01 April 1997Publication History 36citation424DownloadsMetricsTotal Citations36Total Downloads424Last 12 Months5Last 6 weeks2 Get Citation AlertsNew Citation Alert added!This alert has been successfully added and will be sent to:You will be notified whenever a record that you have chosen has been cited.To manage your alert preferences, click on the button below.Manage my AlertsNew Citation Alert!