sheetsda writes: "E3 Footage from Portal 2 is now available for viewing on Steam. A slew of new physics-based gameplay mechanics and their interaction with portals are shown including lasers, bouncing goo, and blackhole-like suction pipes. Looks like Valve has another winner on their hands."
"The fundamental principle of science, the definition almost, is this: the
sole test of the validity of any idea is experiment."
-- Richard P. Feynman