If you think about it, all the rules of communication are just a rule of thumb. Sometimes being confident works, but sometimes it doesn’t. Being vulnerable seems to work as well. There is no way of finding out which works – being confident or being vulnerable – unless we know about our audience and the context.
These two videos have a lot of validity under their belt and probe into the neglected part of the science of communication and human connection.
The power of powerless communication: Adam Grant at TEDxEast
The power of vulnerability: Brene Brown