What is the evidence for Inflation of the early universe?
I am reading some public science books on inflationary universe, e.g. The Inflationary Universe by A. Guth.
Both in this book and the Wiki page mention briefly how this theory of inflation can possibly solve Flatness Problem, Horizon Problem and Monopole Problem. But their explanations are too sketchy for me.
Can somebody give a detailed explanation? But I do not want something too technical. I am doing this for a presentation in my general education class. The professor is a prominent physicist so I need some more details to satisfy him, but most of the audience are just average college students.
How does an inflationary universe solve the Flatness Problem, Horizon Problem and Monopole Problem?