Function-first approaches illuminate phenomena by investigating their functional roles. I first describe virtues of this approach. By foregrounding normal instances of knowledge, for example, function-first theorising offers a much-needed corrective to epistemology's counterexample-driven momentum towards increasingly byzantine, marginal cases. And epistemic practices are shaped by human limitations, needs, vices, and power relations. These non-ideal, naturalistic forces of embodied sociality form the roots of function-first theorising, which creates a fecund foundation for social epistemology. Secondly, I consider an objection to function-first theorising. (...) The objection holds that function-first approaches lack adjudicatory power. That is, function-first proposals are overly compatible with diverse claims about knowledge, which encourages “just so” speculation. In response to this concern, I advocate methodological pluralism in epistemological theorising. All methods have limitations; researchers must be mindful of those limits and fruitfully combine multiple methods. I illustrate with Hannon's function-first based arguments for “epistemic pragmatism”, which denies that the meaning of “knows” is determined by truth conditions. Finally, I argue that function-first theorising motivates staunch anti-skepticism about knowledge. Practical forces cannot chisel a sharp threshold for how much evidence is required for knowledge. But thinking this supports radical skepticism about knowledge conflates fuzzy thresholds and high ones. (shrink)