> They're certified, and it costs way too much to certify a new design or process That buckle is a standard UI across every commercial aircraft in the World.

> They're certified, and it costs way too much to certify a new design or process That buckle is a standard UI across every commercial aircraft in the World. That is very important in emergency situations. Billions of people know pull-to-release. There is really no advantage to changing the design unless we also change to three-point harnesses as in cars. But that won't happen for cost reasons ( ' safety is our number one priority, profit is our zeroth' ).