I think the better that you deform under pressure the longer you have to resist the force against you. Imagine a car where the crumple zone instantly shatters u

I think the better that you deform under pressure the longer you have to resist the force against you. Imagine a car where the crumple zone instantly shatters upon impact, it would barely even be worth having, whereas one that deforms will resist the force while crumpling. (I'm a cs person, so excuse me if that's totally inaccurate)