Look at your hands. Are you absolutely sure you're not dreaming?

In this episode, Alice and Marc explore the most fascinating flaw in our brains: lucid dreaming. Find out why it's physically impossible to run fast in a dream and how scientists have achieved the unthinkable: communicating in real time with people who are asleep.

Between neuroscience and philosophical vertigo, get ready to question the very nature of your reality. Being awake may just be a controlled hallucination...