Seeing familiar faces throughout one’s day/week/month/year is akin to doing whatever TF it is you get up to with your computer on a familiar operating system. Familiar face pools vary in size. Familiar face frequency requirements are adaptable and individually tuned. The crux, then, becomes the reliability of the familiar face pool as it relates to the currently tuned frequency requirement. An unproductive pool feels like sitting down before a virgin OS. A drained pool feels like the OS is language locked to something composed mostly of clicks.