So astonishing was the resemblance, in both voice and appearance, that college president Anna Robbins’s own family couldn’t tell the difference between herself and the on-screen avatar generated by artificial intelligence to deliver lectures to six graduate students.It was an illuminating and, undoubtedly to some in the broader university world, unnerving experiment in education, one that took place last fall at Acadia Divinity College, a small school steeped in Baptist history in rural Nova Sco