 Other Latin American authors were interested in causation. For example, Sergio Martínez (1997) provides a detailed review of the role of causation in scientific explanation along the history of science. In Santiago de Chile, Wilfredo Quezada Pulido leads a research group mainly devoted to study physical causation. In his published works, Quesada Pulido (2002) compared the theories of causal transference, of causal processes, and of conserved quantities, and analyzed the manipulability theory of causation in the light of the problem of anthropomorphism (2007). More recently, Fernanda Samaniego appeals to the manipulability approach to define a notion of “explanatory depth” (2014) and to account for spin-echo experiments (2013, 2015).