View source for Pooled, Sequential & Reciprocal dependence

==== Summary ====

According to Thompson, the three types of interdependencies represent three degrees of complexity that a project can contain, distributed in a hierarchical order. Least complex is ''pooled interdependency'', followed by ''sequential interdependency'', with ''reciprocal interdependency'' being the most complex of the three. In this hierarchy, an interdependence with higher complexity will always contain the interdependencies with lower complexity, but not the other way around. This means, that if ''reciprocal interdependence'' is identified within a project, it is safe to assume that this project also has ''sequential interdependency'' and ''pooled interdependency''. On the other hand, if ''pooled interdependency'' is identified within a project, it cannot be assumed that the project contains any of the other interdependency types.<ref name="OIABook" />

Inherently, this allows the presence of each type of interdependency to be used as a way to determine the complexity of a project. However, this should not be done without caution, cause while the presence of pooled interdependence cannot be used to identify interdependencies of higher complexity, it cannot rule out their presence either.