Final answer:
Pragmatic understanding in communication involves context and intentions behind language. Allan enhances this understanding by signaling uncertainty in the information shared, indicating it should be verified.
Step-by-step explanation:
The concept of pragmatic understanding in communication involves recognizing and interpreting the implicit meanings, context, and intentions behind the spoken or written language. For instance, Allan's statement, "I don't know if this is true, but my sister said that Main street would be closed next week for repaving," enhances pragmatic understanding by signaling uncertainty about the information he's sharing. This indicates to Sasha that while the information may be helpful, it should be verified due to the potential unreliability of its source.
In the examples provided from various conversations, speakers demonstrate different levels of pragmatic understanding by clarifying information, expressing doubts, or providing additional context to their statements and responses to one another.