 Another and currently more popular suggestion is that cores are best understood in terms of the theory theory of concepts. This is the view that concepts stand in relation to one another in the same way as the terms of a scientific theory and that categorization is a process that strongly resembles scientific theorizing (see, e.g., Carey 1985, 2009, Gopnik &amp; Meltzoff 1997, Keil 1989). It’s generally assumed, as well, that the terms of a scientific theory are interdefined so that a theoretical term’s content is determined by its unique role in the theory in which it occurs.