What is the main theme of the notes described?

The choice indicating that the notes appear to be encoded or scrambled is valid when evaluating the context in which the information is presented. If the notes are described as encoded or scrambled, it suggests that the intended message or information is obscured or not easily interpretable. This can mean that the content is difficult to comprehend due to the use of unfamiliar symbols or a jumbled structure, which prevents straightforward understanding.

On the contrary, if the notes were clear and understandable or a straightforward summary, they would not be perceived as encoded or scrambled. Additionally, focusing on a specific subject would imply clarity and organization rather than obfuscation. Therefore, the main theme of the notes being encoded or scrambled accurately captures the essence of their presentation, leading to an unclear and indecipherable discussion.