Example: imagine industrialization continues to replace human manual labor with machine power, and we get to the point that physical exertion is minimal. Evolution would select for traits that help humans adapt to this rarified environment (say, the developmental resources used to build bulky muscle would be used to enhance the senses or increase cognitive ability--whatever helps people survive and reproduce in that new hyperindustrialized environment). Note that this must be true for any environmental conditions; it's irrelevant whether the conditions are created by humans, bonobos, or God. --And it is certainly completely irrelevant whether the humans had a "mental picture" of the environmental changes they made!
Granted, this evolutionary process is slow, and as I have argued repeatedly on the list, there are many human characteristics that have nothing to do with evolution. However, if you understand the basic principles of evolutionary theory, it is abundantly clear that any environmental changes that humans generate cannot "nullify" or "neutralize" the process of evolution. At best, these environmental changes can influence the "random walk" of evolution for one or more species.
Miles