In recent decades, Americans and Japanese have come to know a great deal of each other's ways. Scholars, scientists, writers, and others have examined the complexities and commonplaces of the two societies, and their observations have been widely disseminated in Japan and the United States. A great number of people—officials, tourists, businessmen, students, and professionals—have moved back and forth between the countries. Similarly, a vast tide of goods, services, and capital has flowed in both directions.