Yes, but I think makmanalp point was that earthquakes of up to 8.9 are not unknown in Japan, and there's also been a 9.5 in the world. Thus it would be reasonab

Yes, but I think makmanalp point was that earthquakes of up to 8.9 are not unknown in Japan, and there's also been a 9.5 in the world. Thus it would be reasonable to expect 9+ earthquakes and tsunamis in Japan. Now, can you make anything withstand that? I am not sure, but I think it is possible. It would make electrical power more expensive but how much would more expensive electricity shave of Japan's GDP? Enough to justify not doing it?