In every aspect of our lives we are inundated by information and misinformation, claims and counter-claims: some people tell us we should believe this; others that we should believe that. Decisions have to be made; possible evidence has to be sifted; reasons have to be given; arguments have to be propounded; risks evaluated. All this requires the ability to reason critically: to distinguish between bad arguments and good ones, supporting evidence from mere distraction. Everybody has the basic ability to do this, but it is not always as developed we need it to be: and in this complex world being able to present your point forcefully and rationally is vitally important. The aim of this module is to help students develop the skills required to get the most out of their degree and beyond.