On Dec 14, 2007, at 3:06 PM, Rob Biedenharn wrote:

> Besides, the code to calculate the, so called, "height" is moot.   
> There's no "tree" in the data structure upon which a real height can  
> be said to exist.  I see no need to put the Math library to the  
> test ;-)

Yes, I think we should keep testing the concrete features.  A height  
should naturally emerge from that as needed.

James Edward Gray II