In other words, early on, it wasn't unreasonable to believe that P(travel to china|inside chinatown) > P(travel to china|outside chinatown), especially in a cit

In other words, early on, it wasn't unreasonable to believe that P(travel to china|inside chinatown) > P(travel to china|outside chinatown), especially in a city with strong trade ties and relative geographic proximity to the Pacific ocean.