title: Considering affinity: an ethereal conversation (part one of three).
authors.affiliation: Professor Emeritus, Institute for the History and Philosophy of Science and Technology, University of Toronto, 550 Spadina Crescent, Toronto, ON Canada M5S 2J9. Electronic address: polly.winsor@utoronto.ca.
authors.forename: Mary P
authors.initials: MP
authors.lastname: Winsor