When an Earthquake hits, what do you do? Typical Earthquake 101 tells you to run to the nearest doorway to protect yourself under the "strongest frame in the house". This bendable door is supposed to improve on that thinking.
However! Recent theories (Earthquake 201, I guess) suggest that standing underneath a typical doorway is no better than being any where else during an earthquake. They now teach people to drop to the ground, go underneath a table and hold on. This concept door from student Younghwa Lee kind of mimics being underneath a table while being underneath a doorframe, which in a way, sorta blends the two Earthquake schools of thought together.