Summary: The Dow began the week down 216 points, marking its worst day of 2013 - Cramer's telling you what to make of the selloff. Plus, with sequestration fears gripping this market, Jim's offering up his Gatsby Index to help explain the divergence between high end retailers and the rest of the sector. And, pain at the pump and feeling the pinch? Cramer's gauging the forces behind increasing gas prices.
