“Cross at the green, not in between.” Didn’t we all learn that rule as children? Dorchester is inner-city: a very urban environment. It’s dangerous to cross against the light! It’s dangerous to walk across Dot Ave right in front of cars! So why do so many pedestrians think it’s perfectly all right to do these things instead of walking fifty feet to a light and then waiting for it to change? It’s not as if Boston drivers are so calm and law-abiding that they are sure to stop whenever they see a pedestrian. Or is that what pedestrians are thinking?