What is the 80 20 rule in speaking?

What is the 80 20 rule in speaking?

The 80/20 rule of active listening says that in any sales conversation the sales rep should spend 80% of the time listening and only 20% of the time talking. In the vast majority of cases, the customer doesn't want to know what you think, he wants to tell you what he thinks, how he feels and what he needs.