"extropy"

[Doug Millison]

"Extropy is neither wave nor particle, nor pure energy. It is an  
immaterial force that is very much like information. Since extropy is  
defined as negative entropy — the reversal of disorder — it is, by  
definition, an increase in order. But what is order? Despite our  
intuitive sense, we lack a good operational definition of order, which  
seems to be tied up with complexity (see Ordained Becoming). For  
simple physical systems, the concepts of thermodynamics suffice, but  
for the real world of cucumbers, brains, books, and self-driving  
trucks, we don't have useful metrics for extropy. The best we can say  
is that extropy resembles, but is not equivalent to, information.…"

…continues:  http://www.kk.org/thetechnium/archives/2009/08/extropy.php