Fact, Fiction, and Forecast

Here, in a new edition, is Nelson Goodman's provocative philosophical classic--a book that, according to Science , "raised a storm of controversy" when it was first published in 1954, and one that remains on the front lines of philosophical debate. How is it that we feel confident in generalizing from experience in some ways but not in others? How are generalizations that are warranted to be distinguished from those that are not?