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**Up:** Subject of Statistical Thermodynamics
** Previous:** Deterministic Description

- I cannot predict whether ABC stock goes up or down tomorrow
^{},*but*I can predict Dow-Jones fairly well. - I cannot predict whether a coin will drop head or tails,
*but*I can predict an average number of heads for 1000 drops

**Wrong questions:**- Where this particular molecule will go? What its velocity will be there?
**Right questions:**- What is the average velocity of this bunch of
molecules? How far are individual velocities scattered? How many
distinct states (
*phases*) could be in my system?

© 1997

Wed Sep 3 22:38:51 EDT 1997