Will We Lose the Ability to Reason? | Henrique Peixoto Godoi | TEDxAmerican School of Warsaw

Key Concepts

• Frontal Cortex: The brain region responsible for reasoning, decision-making, and problem-solving.
• Neurodiversity: The concept that neurological differences like ADHD and autism are natural variations rather than deficits.
• Social Emotional Learning (SEL): The process of developing self-awareness, self-control, and interpersonal skills.
• Reason: Using acquired knowledge to draw inferences and propose solutions.
• Agricultural Revolution: A historical example of innovation driven by reasoning and knowledge.
• Computer Revolution: The emergence of computers and their increasing processing power.
• Google Effect: The tendency to remember where to find information rather than the information itself.
• Incompleteness Theorem: A theorem stating that a system cannot create a subsystem more powerful than itself.
• Brain Plasticity: The brain's ability to reorganize itself by forming new neural connections throughout life.

The Power of the Frontal Cortex

The speaker begins by highlighting the unique ability of Homo sapiens sapiens to reason, attributing it primarily to the frontal cortex. This brain region enables us to use acquired knowledge to draw inferences and propose solutions.

• Reason Defined: The speaker clarifies that "reason" in this context refers to engaging with the faculty of reason, using acquired knowledge to draw inferences and propose solutions. Example: If A=2B, then inferring 2A=2B and proposing a solution like 2A=2B-C-5C.
• Societal Progress: The speaker argues that the frontal cortex has been the biggest driver of societal progress.
• Agricultural Revolution Example: The agricultural revolution is presented as a prime example. Someone realized planting a seed leads to growth, enabling settled living and energy conservation.
• Equation for Innovation: The speaker summarizes this process with the equation: Demand + Knowledge = Innovation.

The Rise of Computers and the "Google Effect"

The speaker then introduces the computer revolution as a potential rival to the frontal cortex.

• Alan Turing's Contribution: Alan Turing's work in 1936 introduced computers and their capabilities.
• Processing Power: Modern computers possess immense processing power (GPUs and CPUs processing over 200 billion pieces of information per second), surpassing the human brain in efficiency.
• The Question of Relevance: The speaker poses the question: If computers can process information faster, why reason?
• The Google Effect: A study published in Science by Sparrow, Leo, and others revealed that people are increasingly likely to remember where to find information (e.g., on Google) rather than the information itself. This is termed the "Google Effect."
• Initial Conclusion: Based on this, the speaker initially suggests that we are likely losing the ability to reason.

Reconsidering the Human Brain

The speaker then presents counterarguments, challenging the initial conclusion.

• Incompleteness Theorem: The speaker invokes the incompleteness theorem, stating that a system cannot create a subsystem more powerful than itself. This suggests that computers, created by the human brain, cannot surpass the brain's capabilities.
• Biological vs. Computational System: The speaker emphasizes that the brain is a biological system, not merely a computational one. It doesn't operate solely on binary code (0s and 1s).
• Brain Diversity: The speaker highlights that while everyone shares similar brain structures, individual brains function differently due to unique experiences and interactions with the environment. This leads to brain diversity.
• Contextual Understanding: Unlike computers, the brain draws inferences based on memories and context. A computer would only assume 2A=2B if explicitly programmed to do so, whereas a human might consider other factors.

Brain Plasticity and Adaptation

The speaker further emphasizes the brain's remarkable ability to adapt and heal.

• Brain Plasticity: The speaker discusses brain plasticity, the brain's ability to transform and heal itself based on need.
• Stroke Recovery Example: The speaker cites the example of stroke patients regaining lost motor function through practice and learning.
• Dr. Edward Taub's Experiment: The speaker references Dr. Edward Taub's experiment with monkeys, where forcing the use of a weakened limb led to recovery, demonstrating the brain's adaptive capacity.
• Demand + Knowledge = Innovation (Revisited): The speaker reiterates the equation Demand + Knowledge = Innovation, applying it to the context of brain plasticity. The demand to use the arm, combined with the knowledge of how to use it, leads to innovation in regaining function.

Final Conclusion

The speaker concludes that we are not going to lose the ability to reason. The audience, having acquired knowledge and interacted with the speaker's arguments, has reached this conclusion through their own reasoning. The frontal cortex, with its unique biological and adaptive capabilities, ultimately prevails.