For education, It depends where you got Education. For me, hands-on experience matters most. I have met people who are very well educated, but not earning enough. And then there are people who have got no formal education are much richer.
Encapsulation in object oriented programming is a term we use to describe joining of conceptual topics. A class generally models a conceptual topic, the data and methods on the class allow a clean interface to operations from that topic.
This extends the idea that 'the existence of a public method acts a documentation for what you can do with a object`. The existence of private methods and data are only to the benefit of the developer of the class.
Python's standards for encapsulation are a little different, because you cannot hide methods and data the same way you would with other languages. This is made apparent with public interfaces to private methods like in .__iter__(self): methods.
