Materials: brass, polymer clay
People’s defensive psychology looks no longer as obvious as in the old ages, but it’s hard to say whether it actually being stronger than in any time before.
For example, as Emojis are becoming popular, people’s real emotions are more easily to be hidden with using the funny emojis. 
My inspiration was hermit crabs, which need use hard shells to protect themselves instinctively, because it’s soft and weak inside.
Self defensive psychology is often manifested as self-protection behavior, which looks more like “caring nothing” or “moving on fast” nowadays.
