Whatever the cause, I am in awe of the cabin crew and flight deck crew. To evacuate every passenger and all the crew from a total hull loss is beyond professional. It's legendary.
We always study every aspect of a failure. I hope we study every aspect of this success.
With rumours of a serious outcome for a member of the response team - we need to learn from that, too. Those who rush to help can be at highest risk themselves.
But, frankly, DAMN! Is the 777 the toughest jet ever? Built like a tank, but with no extra weight.