I've debated many economists who claim to specialize in risk and probability: when one takes them slightly outside their narrow focus, but within the discipline of probability, they fall apart, with the disconsolate face of a gym rat in front of a gangster hit man.
In our culture I think most people think of grief as sadness, and that's certainly part of it, a large part of it, but there's also this thorniness, these edges that come out.