Hume’s traditional problem of induction aside (consider it solved, resolved, dissolved, or just ignored), there remains the problem of exactly which regularities in nature are pro- jectable into the future. All samples of water so far exam- ined (under normal atmospheric pressure) have been found to have a freezing point of 32°F; it thus seems rea- sonable to project this regular connection between being a water sample and having a freezing point of 32°F into the future. It is also true that all major economic depressions have occurred at the same time as large sunspots; yet in this case, it does not seem reasonable to project this regular connection between economic depressions and sunspots into the future.Nelson Goodman has shown (1965) that the question of which regularities are projectable into the future is more problematical than these two examples indicate. Goodman’s projectability paradox can be explained by considering the strange electrical terms “condulator’’ and “insuductor.’’ A date in the future is selected, say January 1, 2010. Something is termed a condulator if it is a conductor and the time is before 2010, or if it is an insulator and the time is after January 1, 2010. Something is an insuductor, on the other hand, if it’s an insulator and the time is before 2010, or if it’s a conductor and the time is after January 1, 2010. Now let’s consider the properties of copper wire. All sam-