This system, he realizes, really consists of several separate networks all tangled together in the same space. There's an extremely complicated tangle of fine red lines, millions of them, running back and forth between thousands of small red balls. Just as a wild guess, Hiro figures that this may represent Rife's fiber-optics network, with its innumerable local offices and nodes spread all over the world. There are a number of less complicated networks in other colors, which might represent coaxial lines, such as they used to use for cable television, or even voice phone lines.