Follow the precautionary principle

Another revolutionary concept I'd like to introduce on the topic of evolving into a new (=ancient) way of living is the Precautionary Principle, a moral and political principle which states that proof must exist that no harm will result from action or policy taken. In the absence of a scientific consensus that harm would not ensue, the burden of proof falls on those who advocate taking the action. The purpose is to provide guidance for protecting public health and the environment in the face of uncertain risks(from Wiki).

This is a tough one to explain here in the U.S., where government and industry favor the opposite approach: "do what you want and whoever suffers...well, we don't care. If damage is done, maybe we'll make reparations if forced to do so." Corporate law currently states that corporations are legally obligated to make profit regardless of the effect on humans or the environment. How koo-koo is that?
A contemporary example of applying the PP is in agriculture when growing genetic engineered (GE) food. Currently, organic farmers, who grow food naturally (without genetically engineered seeds) are responsible for protecting their crops from cross-breeding with GE seeds. This is not only ludicrous but impossible. How can a farmer possibly prevent wind and insects from coming onto her land? That is, unless she farms in a bubble...and then it's not a farm. Under the Precautionary Principle, the farmer using GE seeds would be responsible for preventing the introduction of GE organisms into the environment. Again, this is impossible. Therefore, we would not allow genetically engineered food at all because we cannot possibly predict the harm it will cause upon interaction with the environment (causing super weeds when cross-breeding with other plants for example) and our bodies (introducing bacteria that would never be in our intestinal tract otherwise).