For the rest of the week, Kellen Brady asks me to visit former clients or acquaintances of his brother, Mick. Kellen seems to really credit his brother with building the company into what it is today, even though it’s clear from talking to him that Kellen is an engineering genius.

His mind is so calm, so methodical. He can recall specific details from decades prior without having to check, but then he always checks anyway. And he’s always right about whatever ...