Why should objects in Redux be immutable?

Question

Why should objects in Redux be immutable? I know that some frameworks such as Angular2 will use onPush and can take advantage of immutability to compare states of views for

Answer 1

The main reason Redux is using immutability is that it doesn't have to traverse an object tree to check for the changes in every key value. Instead, it will only check the object's reference is changed or not in order to update DOM on state change.