Now, I've been in this Parliament through a series of tragedies—whether we look back to the awful Cave Creek tragedy, in which I became a Minister of Conservation to repair; whether it's the awful Christchurch earthquakes, in which New Zealanders lost their lives, and the subsequent royal commission of inquiry and the parliamentary response to laws; or, indeed, the more recent event of the tragedy that occurred at White Island, also with the loss of life. But, in each one of those tragedies, in responding as lawmakers, we need to know what went wrong.