The belief was that anything was now possible, and that the limitations humans had accepted in the past were not necessarily real. The people who thought those things were correct, although not for the reasons they assumed. The news broke in February of 1997, but the breakthrough itself was already seven months old. The story came from Scotland, devoid of forewarning, and it prompted a lot of people to have unusually dramatic conversations that started like this: “Have you heard about that sheep?”