The staggering pace of technology

10,000 transistors now cost less than a grain of rice. Here's why that matters.FORTUNE -- I have more transistors than neurons. So do you. That's something worth caring about, because it signals the advance of a weird new world that most of us aren't prepared for. Yet we'd better get ready, for the world of the Syfy channel is looking startlingly plausible. Remembering how proud I once was to own a transistor radio with five transistors, I wondered how many transistors I own today. (For those...