Introduction Michael O’Driscoll, Co-Editor and Mark Simpson, Co-Editor In celebrating forty years of publishing history, the Co-Editors of esc decided to initiate what is either an exercise in free-form, collaborative narration or an inductive experiment with few controls. Approaching forty scholars in a diverse sampling, we have asked them to identify, in no more than 150 words, a work, idea, or event of the past forty years that has been key to the project of literary, cultural, and theoretical inquiry. The objective at stake in such invitation is arguably cartographic: to map the contours of the field we inhabit, with esc as sextant. Or perhaps the journal plays the double role of thermometer and aneroid monitor, taking the discipline’s temperature and pulse all at once. Preferred metaphor notwithstanding, the resulting responses vividly capture the dynamic energies and complex torsions rippling through our discipline over the last four decades and impelling its future horizons. And they do so not least by ranging widely: our contributors point not only to creative endeavour, critical polemic, and theoretical sway, to landmark collectivities [End Page 1] and epochal events, but also to entanglements, tendencies, sentiments, and atmospherics, the seemingly less solid but no less real and material relations that produce tangible, long-reverberating effects. A decade ago, esc celebrated its thirtieth anniversary by revisiting Raymond Williams’s Keywords for a new disciplinary era. Ten years on, we look instead to galvanizing or groundbreaking occurrences during the journal’s lifespan that, by setting terms or changing terms, forged keywords we did not know we needed yet could not, in retrospect, have done without. Perhaps what emerges emphatically here is the embrace of multiplicity—the entries indexing dynamic interplay and critical interanimation over mere preference. That, and the reminder that productive tensions and mutually enabling postures remain very much in play in what is a grand, collective, always unfolding project. Michael O’Driscoll, Co-Editor and Mark Simpson, Co-Editor esc: English Studies in Canada English and Film Studies University of Alberta Copyright © 2015 Association of Canadian College and University Teachers