The metal edge can be seen as an argument of tear only if we forego all chance of verifiability and explanatoriness
by stipulating that tear has a second sense 'move as a result of some other object's tearing', which is possible only when a directional PP is present.
When we go into details concerning the justification for believing a particular explanation the historical concern is normally overriden by further factors which are far more important (the subject's beliefs about the quality of the evidence at hand, the degree of explanatoriness possessed by the hypothesis, .
Thus, conservatism is contained in explanatoriness, although it may be overriden by the remaining criteria even before decisive evidence is obtained.
On the first aspect of significance, explanatoriness
, I will have to remain silent about Lerdahl & Jackendoff's universals.
For it to work means that some way has been found to get the antirealist to concede that explanatoriness
is a reason for belief.
Why, so to speak, does the explanatoriness
of an unknown complex conjunction which does invariantly increase the chance of an effect transfer to the ordinary causal claims which specify just one conjunct in this conjunction?
In the most blatant fashion imaginable, explanatoriness has massive epistemic import.
As our discussion has already shown, a highly explanatory theory may be given greater falsifiability, or empirical content, by the addition of independently testable ad hoc postulates; this drastically decreases--indeed utterly sabotages--the explanatoriness of the theory.
No version of standard empiricism can do justice to the vital need to revise metaphysical blueprints (and associated criteria of explanatoriness and methodological principles of symmetry, invariance and conservation) in the light of improving empirical knowledge in the way specified explicitly by aim-oriented empiricism.
is an indispensable and legitimate consideration to be taken into account in judging what constitutes scientific knowledge, in addition to experience of the observable.