It reminds me of twenny years ago when CDs were new, an audiofile friend of mine bought a "special pen" with which you painted the edge of CDs green. It stopped the laser light from being reflected back and messing up the playing. Problem is that even if we assume that that would really be a problem, then painting on the edge would not have any effect, since it would not stop light being reflected. The light is reflected by the phase change and won't care if it's a plastic/air surface or a plastic/paint surface.
Oooh, reminds me of a logical error in an otherwise very enjoyable SF novel, Consider Phlebas. The protagonists are shooting with laser guns at enemies hiding in an old ruin which is overgrown with moss. And they are being shot back at with lasers, at a furious rate. But then they discover that there is nobody in there, only the ruin is built from crystal, and the lasers are their own shots, bouncing around inside all the crystal and then being sent back.Sounds neat, almost a pity to ruin it with logic: if the laser shot had the power to break through the moss the first time, why did it stop doing it on the other side? Why not just go straight through? Also, not being mirror, the crystal would only reflect less than ten percent of the light, so after a couple of bounces it would have been reduced to nothing. And finally, after bouncing about in there, what would happen to make the beam suddenly decide not to do it anymore, but to burn through the moss suddenly and escape? If it could, wouldn't it have done it the first time?
Apart from that, a romping good action space opera book.


















