Fact, fiction and forecast

In 'Fact, Fiction, and Forecast', Nelson Goodman addresses the problem of induction, focusing on how we differentiate between valid and invalid predictions.

He introduces the concept of 'grue' and 'bleen' to highlight the challenges in distinguishing between lawlike and contingent hypotheses.

The book has been influential in philosophical debates, particularly regarding the role of innate ordering in scientific induction and learning.