Scope inheritance in Angular

Question

I\'m new to Angular, so I\'m trying to follow tutorial and just don\'t get it.What confuses me is the dot notation:

Answer 1

In the first code, data as an object is a common object between three scopes and each scope has reference to data.So when data.message is changed all three scope show the changed message. But in the second case the message is a string witch is a value type not an object. Each scope has its own message and changing one of theme will not effect others.