The airplane ride was rather uneventful . I sat next to an older Japanese man but we did n't talk and in fact I do n't think we even made eye contact the whole 12 hours of flight . ( I ' ve noticed that people on the trains in Tokyo do n't make eye - contact either and people rarely start up conversations with strangers . )

Question: Why might people in Tokyo train not make eye contact ?
Answer: None of the above choices .People might value talking to themselves culturally .People might value talking to each other culturally .People might value keeping to themselves culturally .