Common sense and the Japanese have very little interaction...

...more from the cruise ship fiasco:
Kentaro Iwata, professor at the infectious diseases division of Japan's Kobe University, described the situation on board as "completely inadequate in terms of infection control". 
After visiting the ship, Prof Iwata posted a video to YouTube stating that the quarantine measures he witnessed failed to separate the infected from the healthy
He reported:
  • Passengers and crew members moving freely between the green zone, which is supposedly infection-free, and the virus-hit red zone
  • People eating together and sharing living quarters
  • A failure to wear protective clothing, including among medical staff
  • No professional infection control specialist on board

Tsk... tsk... tsk...