It's ALL a matter of opinion. For example, the definition of a healthy system depends on whether you're a barrens topminnow or a mosquitofish, or a supposedly objective student of such things. Which is better, a static system in which nothing changes, or a dynamic system in which populations decline or thrive according to the circumstances? We all have our ideas, but most people have little concept of how training and preconceived notions affect our perception of the world. Biological science is especially vulnerable in this regard.
Irate
your devil's advocacy is definately useful for helping others to hone their polemics, but do you really believe this? do you have any kids? do you think it's fair that we leave the world with catastrophic natural resource shortages, endless war and nothing but LMB and Cyprinus carpio in every ditch, pond and stream? we have free will and i think we should exercise it. just because knee-jerk enviro gobly-gook is full of logical inconsitencies doesn't make out-of-hand dismissal of every single concept implicated in natural resources conservation any more intelligent.
-D