Rachel posted this great link on the internal site:
http://jasper.cmsarchitects.com/pipermail/pil-pc-oceania/2007-Janua...
It's a lengthy description of both 'sides' of this debate. His conclusion: "The question and dilemma, for many of new, high-tech materials and systems such as hydroponics that have potential environmental benefit is going to grow, which is why
discussions such as this are important."
Basically, the question cannot be one of using technology or not using technology (even a plant in a terra cotta pot is living a technologically-assisted life, even if the tool was invented thousands of years ago). Another example of technology's positive potential is the compost bin, which made the process accessible and appealing to a wider portion of the population.
It would be really interesting to hear some arguments against the use of technological assistance to urban agriculture endeavors. Anyone?