On the surface, Steven Spielberg's latest can be taken as a sci-fi thriller with a message, but reading between the lines reveals a relevant social commentary. Digital editorDan Jensenunpacks the deeper meaning behind Disclosure Day. STEVEN SPIELBERGhas spent much of his career asking audiences to look beyond the spectacle. Whether it wasE.T.,Close Encounters of the Third KindorSchindler's List, his films h