Are the 10 Commandments something you "should" do? Are they something you "can" do? The answers to those questions are different. Yes, and no. And those different answers points us to the ultimate purpose of the Commandments, and as we understand them better and better in this series, they'll fulfill their purpose: drive us back to the God who gave them and fulfilled, and drive us out to serve our neighbor, and in serving our neighbor, serve our God.