CANCER (June 21-July 22): In September of 1715, a band of Jacobite rebels gathered for a guerrilla attack on Edinburgh Castle in Scotland. Their plan was to scale the walls with rope ladders, aided by a double agent who was disguised as a castle sentry. But the scheme failed before it began. The rope ladders turned out to be too short to serve their intended purpose. The rebels retreated in disarray. Please make sure you're not like them in the coming weeks. If you want to engage in a strenuous action, an innovative experiment, or a bold stroke, be meticulous in your preparations. Don't scrimp on your props, accouterments, and resources.