> therefore, you will probably be treated as one, even if aren’t
Myself and a couple friends visited Japan for a couple weeks in 2008. On a trip to Osaka, one of my friends was approached by a gaggle of school girls. It was “speak to a foreigner day” at their school, and apparently of our group, the lone female seemed the most approachable. They asked her a series of questions about where she was from and her life in very basic English and took furious notes.
I can’t imagine telling a class in even the safest parts of the United States “Go wander the streets and interview a stranger you suspect to be foreign”, for a number of reasons.
The other thing I want to note is just that you get a lot of leeway as a foreigner in Japan. We’d gotten on a train unknowingly that our JR pass didn’t cover, but figured it out on the train. Well right as we get off, the ticket inspector is there inspecting tickets. We feign ignorance and show him our JR passes, he patiently writes something like ¥500 on a piece of paper and shows us, we pay it. No anger is expressed, just more of a “silly foreigners” vibe.