December 13, 2004: I can't tell you how many (talented) designers I've met who talk breathlessly about the Fibonacci Sequence and corresponding Golden Ratio (or who like to use Golden Ratios in their designs without talking about them), but can't explain what it is. It's like they've been taught that it's important (or harmonious or whatever), but never bothered to understand. Anyhow, Dean Allen has put together a concise, extremely clear explanation called What the Hell is the Fibonacci Series?. And he ends by pardoning those who use the ratio without grokking it: "I don't know much about math, but I know what I like."