CLEAN : New sanity hearing for Israeli who killed Palestinian teen

The video tutorial discusses the concept of graph Y and its relation to Mesa, followed by a clarification and introduction of a new concept, K.

What does the phrase 'Without the graph Y is it Mesa?' imply?

What could be the significance of the response 'So.' in a conversation?

Why might someone respond with 'No.' in a discussion?

What does the statement 'Let K.' suggest in the context of the dialogue?

How do the responses in the dialogue reflect the participants' attitudes?