Goodman’s New Riddle of Induction

Goodman's New Riddle of Induction challenges how we predict future events based on past observations. It illustrates that just because a property (like "grue"—objects that are green before 2020 and blue afterward) has been observed repeatedly, it doesn't necessarily justify expecting it to continue. The challenge is determining which properties are "projectable" or reliable predictors. Goodman’s point is that the justification for induction depends on how we define which properties are natural and predictive, highlighting a problem in establishing a logical basis for trusting future predictions based solely on past evidence.