The article focuses on Gordon Moore, co-founder and chairman emeritus of Intel, and the origin of "Moore's Law". In April 1965, Electronics Magazine asked him to opine on a trend or two. So he did. In prose that was passable for a numbers guy, Mr Moore imagined the possibility of "home computers" and "electronic watches". He "blindly extrapolated" from progress he had noticed in the preceding years that the number of "components" (by which he meant transistors and resistors) on a silicon chip would probably keep doubling every year or so. His off-the-cuff guess held true and, in the 1970s, was dubbed "Moore's Law" by his friend Carver Mead. Mr Moore could not bring himself to utter the phrase for about 20 years, he says. Yet as his "law" became famous he found himself compelled to update it. In 1975, he projected a doubling only every two years. He is adamant that he himself never said "every 18 months", but that is how it has been quoted, and proven correct, ever since. For four decades, Moore's Law has served as shorthand for the rise of Silicon Valley, the boom in PCs (which even surprised Mr Moore, who had forgotten that he had predicted home computers), the dotcom boom, the information super-highway, and other exciting things.