Changes

Firstly, the contingency thesis does not void the possibility of TSC because the contingency thesis itself is a general theory of scientific change. That is to say, the contingency thesis is itself a general descriptive proposition that is attempting to illustrate the mechanism by which science undergoes changes, namely, that there are no patterns in the evolution of science[[CiteRef::Barseghyan (2015)|p. 92]]. For example, the idea that Aristotelian-Medieval physics could have been directly replaced by Einstein’s general relativity without the intermediary stage of Newtonian physics is an inference of the contingency thesis; such a claim is itself a descriptive proposition. Therefore, in virtue of the contingency thesis being a descriptive proposition, it falls under the same category of the general theory of scientific change. Hence, the contingency thesis does not invalidate the scientonomic project[[CiteRef::Barseghyan (2015)|pp. 91-92]].

Secondly, the nominalist thesis similarly does not undermine the possibility of TSC as its claim negates the validity of any descriptive proposition that attempts to describe a particular phenomenon. Given the nominalist claim, disciplines such as Biology, Chemistry and Physics, would have to be discredited because they too constitute descriptive propositions. Therefore, if the nominalist thesis were to be true, it would not only be a particular threat to the general theory of scientific change alone[[CiteRef::Barseghyan (2015)|p. 92]].

• The ontological reducibility thesis does not undermine the project because the claim that higher-level systems compose of lower level elements does not imply that there can be no theory describing the higher-level system. For example, in Biology, the study of lower level elements like genes does not imply that a theory at a higher level is not possible: the theory of evolution is a description of a higher-level system, which would not be possible under this thesis. Likewise, the general theory of scientific change is not undermined by this thesis[[CiteRef::Barseghyan (2015)|p. 94]].

• The epistemic reducibility thesis is not an obstacle to TSC because it has an unprecedented implication just like the other thesis. If the thesis were to be true, then the laws of Biology would be reducible to the laws of Chemistry, which in turn would be reducible to the laws of Physics. The definition of epistemic reducibility is not clearly agreed upon or formulated. But, the basic premise would precludes not only TSC but all our schemes of knowledge. Therefore, it is not a threat to TSC particularly[[CiteRef::Barseghyan (2015)|p. 94]].

• The methodological reducibility thesis renders all higher-level theories pointless. It implies that only sociology can study the changes in the scientific mosaic and, therefore, TSC is ultimately plausible. But, since all higher-level theories are rendered pointless, all disciplines would be said to be futile with the exception of Physics (note: it is assumed here that all disciplines can be potentially reduced down to Physics). Therefore, just as the other theses, the methodological reducibility thesis does not put forth any danger to the possibility of TSC[[CiteRef::Barseghyan (2015)|pp. 95-96]].