Damage is a feature not a bug

Disaster porn for engineers:

This seemed like a good opportunity to point out that while that video makes the damage look pretty bad and cause youtube commenters to call for the designers heads, this is an example of a building behaving well.  The concrete outside the wall rebar cage spalled off, which looks like failure, but is predictable and intentional – you need a layer of concrete outside the cage for corrosion protection that you plan on being sacrificed during an earthquake.  The rest of the wall remained confined and was able to cycle through major inelastic deformations to dissipate energy and prevent the rest of the building from collapsing.  They were so effective that the owners are planning on repairing the damaged shear walls and finishes and reopening, which is pretty impressive.