*Fukushima: court upholds acquittals of three Tepco executives over disaster.*

That is the right outcome. The Fukushima nuclear plant disaster could have been averted my designing the nuclear plant differently, and that gives us in our hindsight grounds to conclude that the actual design was excessively risky. But that doesn't mean people should be convicted of a crime for not recognizing this in advance.

Perhaps Tepco, the company, should face civil liability for the economic damage to surrounding businesses. These executives can't possibly pay that much, but maybe Tepco can do so over many years.