When new models were displayed to the masses at the great parades in the Red Square or elsewhere, the crowds stood in reverent silence and then broke into jubilant shouts of triumph. What was the meaning of this thunderous roar, when on the ground turtles of steel and serpents of iron rolled past, when in the sky triangles, arrows, and rockets shaped like fish, arranged themselves with lightening rapidity into ever-changing formations? Though the display was continual, in this silence and these shouts something evil, old as time, manifested itself in man, who is an outsmarter and setter of traps. Invisible, Cain and Tubulcain marched past in the parade of phantoms.