If you look again at the book, you will find that it is science based. Sonic bloom for example, was invented out of scientific experiments -- plants responding to sound frequencies. And the explanation is that soil bacteria do in fact respond to sound frequencies and respond to make better plants. In other cases the authors report what people have used in the past to increase yields in their gardens. And, there is a look at weeds and what they do to improve soil.
I would bet that my own scientific training would match any one here. And what I have learned is that "throwing out the baby" is too often the case in science. Science is only now learning how to account for the interrelatedness of environmental variables, that were previously ignored. In fact, good science is science that stretches a little around the borders and incorporates imagination meshed with scientific method. This how we learn, for example, that feeding soil bacteria can be a lot more productive than the industrial NPK method of feeding plants directly.
To me the bottom line of the Secrets of the Soil Book is about stretching our scientific imaginations. We could, for example, use certain techniques, instead of being swamped by GMOs (that's "science" isn't it -- to modify the genes of plants, but its not good science because its so short-sighted). These techniques could produce grains that can be made into fuels and reduce or eliminate our dependence on foreign oil.
