Color us a yellow shade of mendacious, but if we designed something that works 99.999999999997 percent of the time, we'd probably round off and give ourselves a big ol' 100 percent A+. We'd probably throw in a smiley faced sticker, too. Computer scientist Holger Hermanns, however, is a much more honest man, which is why he's willing to admit that his new wireless bike brake system is susceptible to outright failure on about three out of every trillion occasions. Hermanns' concept bi
