6 key principles of experts' knowledge

1. experts notice features and manful patterns of info
2. experts have abilities to make sense of the content based on prior knowledge that is organized in some ways
3. experts' knowledge is not isolated and it related to context.
4. experts have abilities to flexibly retrieve important aspects of their knowledge.
5. experts may not have abilities to teach others
6. experts have flexibilities in their approach to apply to new situations.