Cosmic Queries – The Biggest Ideas in the Universe with Neil deGrasse Tyson & Sean Carroll

Free Will

The debate on free will in the context of quantum mechanics is a fascinating exploration of human agency. Sean Carroll argues that quantum mechanics does not negate free will, as the laws of physics, whether deterministic or stochastic, do not directly impact our perception of choice. He explains that free will is more about how we describe human behavior using probabilities and choices, rather than overcoming physical laws 1. Neil deGrasse Tyson humorously points out the irony of those who deny free will trying to convince others of their viewpoint, which itself is an exercise of free will 2.

When we talk about human beings, of course, we talk in a language of probabilities and choices and volition and willpower, because we are not perfect calculating machines that can say exactly what's going to happen.

--- Sean Carroll

This compatibilist view suggests that free will is compatible with the deterministic nature of physics, as it is the best way to describe human actions in the real world.

   

Quantum Biology

Quantum biology examines the intriguing intersection of quantum mechanics and biological processes. Sean Carroll notes that while many "quantum" concepts are misused, quantum biology is a legitimate field that explores phenomena like energy transfer in photosynthesis, which classical physics cannot fully explain 3. He highlights that quantum mechanics might be necessary to understand certain biological processes, suggesting that everything, including biology, is ultimately rooted in physics. Neil deGrasse Tyson adds that understanding biology requires chemistry, which in turn requires physics, reinforcing the idea that all sciences are interconnected.

In one sense, everything is quantum. Like you and I are quantum. The table that in front of me is quantum, but the quantumness of it doesn't show up.

--- Sean Carroll

This perspective underscores the potential for quantum mechanics to provide deeper insights into the fundamental workings of life.