Imagine you have six square panels of one-way (or two-way, point is you can see through one side, and the other one is reflective) glass. You put those panels into a cube, reflective side in. Now you shine a light into that cube, and take it into a dark room. What happens? Does the cube glow with the light, since it keeps bouncing off the inside mirrors? Or does the cube stay black, because no light can escape? This has bothered me since I first learned about one-way glass, and it's pissing me off to this day. Answers and speculations are welcome (until I bring my sorry ass to a...wherever one-way glass is sold and do this IRL).