That's why scientific revolutions happen, since researchers in the existing research program(paradigm) don't want to give up the core hypotheses, by protecting

That's why scientific revolutions happen, since researchers in the existing research program(paradigm) don't want to give up the core hypotheses, by protecting these core hypotheses by auxiliary hypotheses to withstand any criticims, anomalies, etc. Imre Lakatos calls these auxiliary hypothes protective belt. It is very easy to give up what one has mastered.