The problem is that fundamental normative principles, as invoked in the 'normative explanation' strategy, would seem to be of exactly the objectionable sort.
In retrospect, examining the possible explanations invoked in the beginning of this work, clearly argument (i) was given a precise allometric justification, whereas (ii) can be ruled out, since it would contradict the well-established allometric scaling of the specific BMR [3] which suggests that the rate of replication of cells decreases as the mass of the mammal increases.
However, no evidence was found during this study (or in the literature) that the nyoka is invoked in any causal explanation of xifuva in children.
It has also been invoked in explanations of the larger long-term deficits following brain injury and the less favorable outcome of remediation in adults compared to children [2], [10].
Neoconservative imperial ambitions have been invoked in explanation, as well as the American thirst for oil, or even an Oedipal contest between George W Bush and his father.
The constructive empiricist can hence avoid saddling scientists with a commitment to the unobservable entities invoked in such explanations, properly claiming that such commitments are not licensed by the activity of science.
Psychological content, on the other hand, refers to the contents of intentional mental states that is invoked in psychological explanations of behavior.
Sometimes religious norms were invoked in explanation for proscription of women's drinking.
For example, if it is part of the definition of non-natural properties that they are not invoked in scientific explanations then this defense is unavailable.
Indeed, he appears to suggest that a successful historia or factual inquiry will prepare us to grasp the difference between those facts that need to be explained and those that will be invoked in our explanations.
