what is the overall effect of a negative feedback mechanism
Negative feedback Whereas positive feedback tends to lead to instability via exponential growth, oscillation or chaotic behavior, negative feedback generally promotes stability. Negative feedback tends to promote a settling to equilibrium, and reduces the effects of perturbations. Negative feedback loops in which just the right amount of correction is applied with optimum timing can be very stable, accurate, and responsive.
Negative and positive rights Under the theory of positive and negative rights, a negative right is a right not to be subjected to an action of another person or group—a government, for example—usually in the form of abuse or coercion. As such, negative rights exist unless someone acts to negate them. A positive right is a right to be subjected to an action of another person or group. In other words, for a positive right to be exercised, someone else's actions must be added to the equation. In theory, a negative right forbids others from acting against the right holder, while a positive right obligates others to act with respect to the right holder. In the framework of the Kantian categorical imperative, negative rights can be associated with perfect duties while positive rights can be connected to imperfect duties.[citation needed]