Model based theory Definitions and Use
What is the definition and use of a model-based theory?
The first way, which you call the classical-logical perspective, is issued from Hume’s notion of ‘sense data’ (1748). For him: ‘It seems a proposition, which will not admit of much dispute, that all our ideas are nothing but copies of our impressions, or, in other words, that it is impossible for us to think of anything, which we have not antecedently felt, either by our external or internal senses. I have endeavoured to explain and prove this proposition, and have expressed my hopes, that, by a proper application of it, men may reach a greater clearness and precision in philosophical reasonings, than what they have hitherto been able to attain. Complex ideas may, perhaps, be well known by definition, which is nothing but an enumeration of those parts or simple ideas, that compose them.’ This proposition had been developed by the circle of Vienna which tried to reduce scientific thinking to a lower degree of confirmation, the protocol sentences, as you call them.