. >> reporter: hisashi ninokata, professor at tokyo institute of technology, who is investigating the nuclear accident at fukushima, has this to say. >> translator: some say that we created a nuclear safety myth but such a myth spread throughout society without us knowing it. this has undeniably resulting in delays and measures to improve nuclear safety. >> translator: did any members of the society look back and report on the accident? >> translator: nobuo shuto, professor emeritus at tohoku university, who is well-known for his studies of tsunamis, was invited as a guest speaker. it is quite unusual for someone who is not a member of the society to give a lecture at the conference. in a thesis published 23 years ago, dr. shuto warned about a danger of a tsunami crippling electrical systems at a nuclear power plant, but it was not given much attention in drawing up safety measures for nuclear power plants. >> translator: it is important to use one's imagination when preparing for tsunami. we have to imagine how past tsunami would have affected today's coastal areas. >> translator: ho