Pagel explains in a very abbreviated version about why language began to emerge: What does he state as the dilemma that developing a method for communication solved?

He stated language as the dilemma that developing a method for communication.

Explanation:

Pagel explained the importance of language in communicating. Human behavior is fully expressed by the communication and speech of them. Language began to emerge to develop communication system. Different social groups are habituated with different languages.

These languages are the way of communication. Communication makes clear the expression and view of different group of people. It varies region and zone wise. One part of world's group language does not cope up with the language of other group.