I am Professor of Philosophy at the National University of Singapore (NUS). I have two main research projects and a side project.

My first main research project is in epistemology. Here I have mustered arguments -- often broadly metaphysical rather than linguistic ones -- that favor either contextualism or skepticism over non-skeptical invariantism. For instance, I argue that contextualism and skepticism are better than non-skeptical invariantism at using knowledge to explain action, at respecting the natural structure of epistemic reality, and at accounting for chancy and inductive knowledge.

My second main research project is in philosophy of perception. Here I defend rich pluralism, which says that conscious perception consists of two very different kinds of sensory awareness that are exercised in concert: (i) representational awareness of particulars and (ii) non-representational, partly essence-revealing awareness of sensory qualities.

On the side, I also consider metaphysical questions about the nature of grounding.