As someone in the habit of sticking my tongue out at surveillance cameras, I might have to learn to restrain myself when staring at a human/camera mixture. Mor

As someone in the habit of sticking my tongue out at surveillance cameras, I might have to learn to restrain myself when staring at a human/camera mixture. More seriously, I think this suggests a general principle: if something has intrinsic value, that will eventually outweigh fashion concerns. Even though bluetooth didn't totally take off, it seems like roughly half the people talking on phones in lower Manhattan have earbuds in, and I can't think of a place in the US that's more fashion-conscious. The real question isn't whether people can't grow accustomed to glass, but whether the benefits of glass outweigh the disadvantages, minus the fashion-centric ones.