When we are given a lot of information, it is usually helpful to take a moment at the end to just remember the basic points so we can better remember them. This is not a groundbreaking concept, you will see this in most presentations because this is a very effective tool to help people retain the information. 

Backtracking can also be used to rephrase a received question or command, something like, “If I understood you well, you’d like me to tell you about A and how it relates to B.”  

Backtracking is also very important in teaching, when the teacher sums up what has been covered in the lesson so the students do not forget the material, especially from the start of the lesson. So, to sum up, backtracking is an effective tool for communicating ideas, by going over the basic points, and rephrasing questions and commands.