Whoa! Cool down... we don't need any more fallout.

We can't blame the Japanese for not being decades ahead when they built the plant. As in many human foibles, it seemed like a good idea at the time.  The workers who stayed at the plant knew the risks, and stayed in an emergency situation, trying to prevent it from getting worse. They used what precautions they could devise. Real world reaction to time-sensitive crises.

No one is more anti-nuclear power than I am. However, we can't just shut them all down and expect to continue life as usual. Perhaps we should take a step back, re-examine the wisdom of over centralization, and look at power production from a more regional, or even local perspective.