Although there is no single scientific method, scientists use the triple tests of empirical evidence, logical argument, and skeptical review to discover patterns in nature and explain their underlying reasons in terms of naturalistic theories that remain open to further testing. In this activity, standard-size newspaper has a grain that causes it to tear more readily in the direction perpendicular to the line of printing (vertical) than in the direction parallel to it (horizontal). In fact, horizontal tears will “magically” veer toward the vertical direction