Not just HN. Americans in general. And of course, the very paradigm you cite (David & Goliath) is Biblical, meaning it's been popular for at least 2,500 years,

Not just HN. Americans in general. And of course, the very paradigm you cite (David & Goliath) is Biblical, meaning it's been popular for at least 2,500 years, give or take. Humans are confident, fighty creatures who like to beat the odds. Or at least, they like to think of themselves in this way.