My old friend (for about 55 years now) and wonderful colleague Lauri Karttunen died two days ago (in the morning of 3/20). The briefest summary from the Stanford linguistics chair, Chris Potts, that morning:
Lauri was a towering figure in linguistics and NLP. Numerous observations, concepts, and hypotheses that we all take for granted in these fields trace to his foundational work. The breadth and depth of these contributions is really remarkable: discourse referents, presupposition plugs / holes / filters, implicative verbs, finite state morphology, Finnish morphophonology, natural language inference, and on and on. In all these areas and more, he helped to set the research agenda.
And of course we all know Lauri as a vibrant presence in Linguistics, in the NLP Group, and at CSLI [Stanford’s  Center for the Study of Language and Information]. He shaped the work of generations of Stanford scholars — including turning a number of them into Finnish scholars via his legendary Structure of Finnish courses with Arto [Anttila] and Paul [Kiparsky]!
I’m no longer able to write death notices afresh — for people whose work (of whatever kind) I’ve admired, mentors, colleagues, former students, friends, lovers, whose deaths now pile up in such numbers that I can no longer do them honor, as I once tried to do.
Today, though, I will manage some Musings On Life: on being of some age (only 4 months younger than me, Lauri was for practical purposes the same age as me); and on intimate personal and professional relationships (Lauri having had both with Annie Zaenen, his wife and frequent collaborator, who survives him).
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