In that moment Sal supplies the answer for why Dean came, "never knew why he had come anyway," and then Sal supplies "except to see me," and his own pain and tears are routed through Laura.
This is just one striking instance of the immensity of pain in the animal kingdom, which defies explanation except via the unyielding calculus of competitive survival.
This inflicts pain on those workers, suppliers, and investors, but the market adjusts except where recovery gets drowned under the din of interventionist clatter.
