The title of the Fingar text is Reducing Uncertainty. What is meant by this phrase?

I’m working on a international law discussion question and need an explanation and answer to help me learn.

The title of the Fingar text is Reducing Uncertainty. What is meant by this phrase? What are the goals of reducing uncertainty? Should intelligence analysts aim for perfection? Explain what new threats/challenges/responsibilities have impacted the IC’s ability to reduce uncertainty and why they have had this impact. 

Links to chap 1-3 on book Reducing Uncertainty by Thomas Finger (If needed) 

Chap 1: https://docs.google.com/file/d/1wF1S2K4feXtrZlBLj3z0HzLiVaoe6LCl/edit?usp=docslist_api&filetype=msword

Chap 2: https://docs.google.com/file/d/1BrQ_ssVeYhyp978r6bJ08LqU2GSaeJKB/edit?usp=docslist_api&filetype=msword

Chap 3: https://docs.google.com/file/d/1wfy0WOi6Yj27MH23t-HZXCf9L30L5FQf/edit?usp=docslist_api&filetype=msword