A symmetric universe: what is left, what is right ?

This is a conversation about the nature of symmetry in our universe, and specifically we will be talking about mirrors, organic symmetry and physics symmetry.

We will start with this simple question: if we were on the phone with Aliens, how would we teach them what is left and right. This seems like an easy task, but we will discuss how this is trickier than it sounds, and see what conclusion we can draw from this. This thought experiment has profound implications in our understanding of the universe.

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About The Big Questions:

The goal of this meetup is to explore the big questions about life and the universe. We address diverse topics, covering science, history and philosophy, with an open mind but with the rigour of science.
We share our knowledge without condescendence.
We do not assume any prior knowledge.
The conversion will be held in English, but english beginners are welcome.
Each meetup will address one single topic decided ahead of time.