according to Michael Montemerlo, a researcher at Stanford. “People always ask if Junior will sense other people’s brake lights,” Montemerlo said. “Our answer is, you don’t really have to. Junior has the ability to measure the velocity of another car very precisely. That will tell you a car’s braking. You actually get their velocity instead of this one bit of information saying ‘I’m slowing down.’ That’s much more information than a person gets.”
Physical world > sends all kinds of signals > participants take up, consider, and then act on. Human drivers use break lights as symbols/signals. Computers can use lasers.
