 Simon Clarke sees this schema as "scholastic formalism", and the second level as an arbitrary addition to provide a link between the other two, rather than an analytically necessary one.As Kincaid points out, though, "Capital" is primarily a logically rather than chronologically argued work, which looks at the laws of capitalist development and draws mainly supporting evidence from historical data.Thus, the separation of the Uno school represents an acknowledgement of this logical nature, and registers the key problem of how the critique can be linked to actual economic development in a way that competing schools often cannot.