Here is a simple fuzzy logic system, borrowed from an example given in 
"The Fuzzy Systems Handbook", by Earl Cox.  The problem is to establish 
the price of a product.  The fuzzy system has 4 rules:

1. The price should be high
2. The price must be low
3. The price must be around 2 times cost
4. If the competition price is not very high, then the price should be 
near the competition price

Mathematical definitions terms like "high", "low", "near the competition 
price" etc. are part of this fuzzy system, which yields a suggested 
price.  These rules are in fact part of a system which has been used to 
price millions of dollars worth of real products for a profit-making 
enterprise.  This fuzzy system solves the problem for which it was intended.

My question to fuzzy critics is: why should this system not be used?

Will Dwinnell
predictor@dwinnell.com