What I've noticed is that often, when we instinctively know something is not right, often we find out it's true when the unforeseen consequences arise. The latest example of this theme comes from an excellent article in Wired magazine (thanks @larrybrilliant), where they describe in detail how the swine flu now spreading through the world had its origins in insanely packed pig farms:
The horrible packing of pigs for slaughter, standing in their own excrement, combined with an "ever-escalating array of ... vaccines." Sounds horrible, it seems wrong, and as we see, there are consequences.
At an environmental level, the conditions which shaped H3N2 and H1N2 evolution, and increased the variants’ chances of taking a human-contagious form, are well understood. High-density animal production facilities came to dominate the U.S. pork industry during the late 20th century, and have been adopted around the world. Inside them, pigs are packed so tightly that they cannot turn, and literally stand in their own waste.
Diseases travel rapidly through such immunologically stressed populations, and travel with the animals as they are shuttled throughout the United States between birth and slaughter. That provides ample opportunity for strains to mingle and recombine. An ever-escalating array of industry-developed vaccines confer short-term protection, but at the expense of provoking flu to evolve in unpredictable ways.
The world lives in such a beautiful balance, each thing complementing the other in this intricate array of interdependencies. Then we take our logical, rational mind and deconstruct some piece of it and think we can get away with changing it for some increase in efficiency or productivity, without any "unforeseen" consequences.
I really am not interested in placing judgmental or moral overtones on this. This is not about God punishing sinners or some such rot. To me it's more about God's beautiful intricate creation, and how the depth and richness and complexity of it can never be fathomed by the human mind, and if anything I find myself shaking my head at our hubris in thinking we can push things to their limits like this and not expect consequences.
This is why whenever I hear some industry talking head saying how something is "perfectly safe" and "all studies have shown there are no harmful side effects" for some strange mutilation of the natural order (such as fake sugar and fake fat, or massive vaccinations of children, or the heavy use of pesticides and chemical fertilizers) I just go "yeah, right, uh-huh" and wait for the next shoe to drop, which it invariably does ten, twenty, or fifty years later.