[Taxacom] Clade age

[Curtis Clark]

On 11/14/2011 10:33 AM, John Grehan wrote:
> People argue
> over definitions all the time, but whether such arguments really solve
> anything or not is another matter. The perennial species definition
> arguments are a nice case in point.

This is the confusion I wrote about. Human constructs are subject to 
definition, and, Humpty-Dumpty notwithstanding, shared definition 
facilitates communication (good). Definition of natural entities or 
processes freezes their understanding at a point in time (bad).

-- 
Curtis Clark                  http://www.csupomona.edu/~jcclark/
Professor, Biological Sciences                   +1 909 979 6371