Evaluate the collective function of references cited together in a given text segment.
Classify their combined role into one of the following categories: 'method', 'background', or 'result'.

Text:This approach – a kind of ‘Artificial Life route’ to self-organized criticality – could promote the development of conceptual models explaining how organisms are driven towards criticality in an abstract level, working as ‘proofs of concept’ (Barandiaran and Chemero, 2009) and supporting existing and future experimental findings.
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