Here is my obligatory Ken Arrow story upon hearing the news of his passing.
Arrow was foundational in the field of welfare economics, a field on which most of environmental valuation (my field) is based. A while back--I want to say a decade or so, but really I have no idea--I had the opportunity to present a paper at a workshop at Stanford. In the audience, center of the front row, was Ken Arrow. He fell asleep.
That's the extent of my interaction with one of the giants.
RIP Ken Arrow
