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Caveat

Good morning, test subject! Now, you may have heard some rumors around the Aperture Science Pure All-Natural Not-Chemically-Treated-or-Poisoned Water Cooler and Dispenser. Rumors that this next test chamber is maddening, unfair, damp, dizzying, potentially fatal, and/or unsolvable. Although unsubstantiated, most of these rumors are entirely true.

It's definitely solvable, though. At least, we're going to assume so until we've exhausted all available test subjects.

Good luck!