Monday Accident & Lessons Learned: IAEA’s Report on the Nuclear Accident at Fukushima

For those still interested (the accident occurred in 2011) there is a report out by the IAEA on the Fukushima Nuclear Plant Accident (caused by a tsunami). 

Aside from the info in the report, I find it interesting when a report comes out way after an accident has occurred (in this case more than four years later). 

My question is, is learning possible this late after an accident or has everyone already moved on? Since the regulators have already issued regulatory requirements and many utilities have already taken action … is the report just for historical documentation?

What do you think?