From 10 commandments to "factor inputs and externalities"
Just after I finished writing the previous post, I visited my favourite urban gardener's blog (she's my inspiration to keep trying to grow my own, albeit on a much smaller scale) and read a complementary post that also really challenges my thinking and way of doing things.
Please do check out Gayla's thoughtful analysis. I agree all gardeners need to consider these "factor inputs and externalities" -- they really are the key part of the equation. I myself admit to being more focused on the ouput.