Eric Yost wrote: "Boiling point is not a rule. It is a measured standardized ..." In other words, a rule. Eric concludes: "On the other hand, if you are saying the equivalent of 'nothing excludes the possibility that tomorrow the sun will not rise' (Hume?) then I can't really argue with that." The great thing about the scientific method is that it allows for, and actively encourages, the possibility of new facts altering established beliefs. I am not even an amateur in these matters but my impression is that Einstein's greatness lies in his recognizing anomalous facts and coming up with a theory that accounted for them. The claim 'nothing excludes the possibility that tomorrow the sun will not rise' is not necessarily a skeptical one but can function as a reminder that the empirical business of collecting facts is not, and never can be, finished. While the rule regarding the boiling point of water has a great many facts to support it, the rule itself is not, and never could be, a fact. When rules become facts is the day when scientific inquiry comes to an end. Sincerely, Phil Enns Toronto, ON ------------------------------------------------------------------ To change your Lit-Ideas settings (subscribe/unsub, vacation on/off, digest on/off), visit www.andreas.com/faq-lit-ideas.html