Final answer:
Susan Haack's 'Double-Aspect Foundherentism' makes key contributions to the Agrippan/Münchhausen trilemma and the implicit heptad in epistemic justification.
Step-by-step explanation:
Susan Haack's 'Double-Aspect Foundherentism' makes key contributions to the Agrippan/Münchhausen trilemma and the implicit heptad mentioned in 'Infinite Cycles and the Graphical Approach to Epistemic Justification' and 'Coherentism via Graphs'.
Haack's double-aspect foundherentism offers a way to address the challenges posed by the trilemma, which states that any system of belief justification will inevitably encounter one of three problematic options: infinite regress, circular reasoning, or arbitrary foundations.
By viewing justification as a multifaceted concept with both foundational and coherentist elements, Haack's approach combines aspects of foundationalism and coherentism, contributing to the understanding and resolution of the trilemma.