Tinker, Tailor, Soldier, Geek. Most things are interesting, if you can just find the right perspective.
… shopping, communicating, or starting a business there — they inevitably invoked a single metaphor. The internet, said just about everybody, was a contemporary incarnation of the wild, wild West.
… Humanity.” This was a real lesson in humility. In hindsight, our model lacked “external validity.” Instead of asking one person if the ad was effective 70 times, we should have asked 70 people one time. This left us susceptible to what statisticians call “correlated errors.”