Dennis is not more likely to be a dentist. Nevertheless, are you surprised that the head of Google[x] lab–the lab bringing you electronically chauffeured vehicles and googles–is called Astro Teller? I kid you not. Named Eric Teller at birth, he has been called Astro since high school. Would you also be surprised to learn that Astro’s grandfathers both made notable contributions? The first grandfather you have probably already guessed, physicist Edward Teller. The second? Gerard Debreu.