For the better part of a century, most biologists have been reluctant to use those words, mindful of a principle of evolution that says "evolution cannot run backwards".
We must remember that Afghanistan, just as Iraq, is not a classic war of attrition—this is counter-insurgency, and it will not be won by military means alone.
For the better part of a century, most biologists have been reluctant to use those words, mindful of a principle of evolution that says "evolution cannot run backwards".