Another remark in the definition of Net Energy and ERoEI*

 I need to add one more condition to the definition of "sustainable steady state" . We understand that insofar as pollution control is concerned there is bound to be some leakage into the atmosphere. The atmosphere can digest a small part of many things however we must set a rule as to how we will deal with the portion that is not digested (turned into something that is not harmful and, therefore, does not constitute pollution). Let us handle material additions to the atmosphere as we have handled loss of vital materials, except in reverse. We must allow no more foreign material to enter the atmosphere than we can no longer tolerate after 1000 years.

With these small variations from absolute steady state, we refer to our system as a sustainable steady state system. Actual experience will determine the practicality of this definition.