How do you know if a new drug will do what it claims to do?
Or a new policy will have a desired effect on a population?
Many experts believe the best way to answer questions like those are to use 'randomised trials'.
One such expert is Hon Dr Andrew Leigh, a member of parliament, but but also a big proponent of randomised testing, even authoring a book about it.
In this episode, we explore why and how randomised trials are used, what happens when they're not, and how they might be used even more in Australia to drive decisions and policy.