Yale law professor Ian Ayres walks through classic paradoxes and dilemmas as tools for legal reasoning, part of his course A Law Student's Toolkit. He works through examples like the liar's paradox and prisoner's-dilemma style tradeoffs, showing how lawyers use these puzzles to expose hidden assumptions, test the limits of an argument, and anticipate counterarguments before a judge or opposing counsel raises them. The lecture stays practical throughout, tying each paradox back to how it might surface in contract disputes, statutory interpretation, or courtroom strategy rather than treating them as abstract brain teasers. Aimed at students building a foundation for law school, it runs about nineteen minutes and functions as a self-contained lesson within the larger toolkit series, useful on its own even without the rest of the course.