Arguably no topic generates more questions, or more frustrating answers, than aerodynamics. Ask which helmet, skinsuit, or wheel is fastest and the reply from those in the know is almost always the same: “It depends.” In this episode, Ronan Mc Laughlin is joined by data scientist Tom Epton to dig into why "it depends" is the only accurate answer, why aero is never a fixed number, why your CdA isn't always your CdA, and why context matters more than any marketing claim.