主要內容：

The one rule to keep every conversation going natually
30% rule
No conversation will last long with the same information being repeated over and over, it gets boring, and it is no new stimulation,
whatever you say, make sure 30% of it is new information.

If you add too much new information, the conversation can easily become one-sided, the person you're speaking to might feel like you're not listening to them, you are simply reciting lots of things you know. And that's a more of lecture, not the conversation.

Two premises:
1.Both people need to be interested in continuing the conversation.
2.The current topic can't be expaned on.