685. バイリンガルニュース 11.06.25

In Bilingual News, the hosts present and discuss two main news stories. The first story examines a study on tipping culture, revealing that it's more of a social ritual than a rational economic action, driven by gratitude and conformity rather than service quality. The hosts share personal experiences and opinions on tipping, particularly in the US, and compare it to non-tipping cultures like Japan and the UK. The second story discusses a study suggesting that the first Americans may have arrived via a coastal route from Hokkaido, Japan, rather than the traditional Bering Land Bridge theory. The hosts explore the implications of this theory on the origins of Native Americans and the timeline of human migration. They also touch on various topics, including new buzzwords in Japan, a movie review, AI, and the new Prime Minister of Japan.