 On this reconstruction of his work, Philo eventually abandoned both radical and mitigated skepticism for a form of fallibilism that he described as the basis of the Academic tradition. His promotion of Academic philosophy as open-ended critical inquiry had some impact on the work of Cicero, Plutarch, Favorinus and Augustine, but his radical innovations in epistemology and ethics sank almost without trace. The skeptical tradition survived in the form of Pyrrhonism, but the Academy did not. Like any interpretation of Philo’s philosophical development, this reconstruction is speculative in some respects. But much of it can be confirmed or disconfirmed by further work on ancient skepticism, and especially its Latin tradition, which remains an open field for research.