Video Summary
The Wason selection task (If A then 7) is solved correctly by only ~4–10% of people in abstract form.
Framing the same logic as a social/deontic rule (ages and drinks) dramatically improves performance.
Correct answers require checking the antecedent (A) and the not-consequent card (not-7); many people mistakenly check the consequent (7).
Humans are better at social reasoning (detecting rule violations) than abstract truth-finding, likely due to evolutionary pressures.
Confirmation bias leads people to seek confirming examples rather than searching for counterexamples; Popperian falsification is rarer in everyday reasoning.
Turn over the A (the antecedent) to check for a seven, and the 8 (a not-seven) to check whether there's an A on the reverse; flipping the 7 is a common but unhelpful confirmation.
Social or deontic framings tap into evolved reasoning for detecting rule violations and obligations, making it easier to spot cards that could falsify the rule.
Modus ponens (if P then Q; P therefore Q) is intuitive for many; modus tollens (if P then Q; not Q therefore not P) is less intuitive but crucial for finding counterexamples.
Participants tend to seek evidence that confirms the rule (e.g., flip the 7) instead of searching for disconfirming instances that would falsify it.
People with formal training in logic or who have been taught to search for counterexamples tend to perform better on the abstract task.
"The Wason selection task has been called the most intensely researched single problem in the history of reasoning."
The Wason selection task, devised in 1966 by Peter Cathcart Wason, is a key experiment in the study of human reasoning. This test involves four cards that display a letter on one side and a number on the other.
Historically, this test reveals that only about 10% of participants answer correctly, a number that drops to around 4% when considering various replicable studies. This highlights the inherent difficulty of the task.
Researchers Mercier and Sperber pose an interesting question about its significance, comparing it to the balance of scientific tools in other fields: "Is this selection task to the psychology of reasoning what the microscope has been to biology?"
"You have four cards in front of you, letters on one side and numbers on the other."
The subjects are presented with four cards: A, G, 7, and 8. The objective is to determine which cards need to be flipped to validate the rule, "If there is an A on one side, there is a seven on the other."
The challenge lies in that participants can only see one side of each card at any given time, necessitating careful consideration over which cards to flip.
Initial reactions may cause confusion, with many participants instinctively wanting to check the A first, which makes sense intuitively but does not entirely address the requirement of checking the potential violations of the rule.
"The exact same problem, except this time instead of letters and numbers, the cards are about people in a bar."
The task is reframed using a bar setting, where the cards indicate a person's age and what they are drinking. The rule is that no one under the age can be consuming alcohol.
In this version, recognizing that a 35-year-old's drink does not matter simplifies decision-making. The focus shifts to turning over the card for the 12-year-old and the card showing beer, paralleling the original logic challenge.
This adaptation demonstrates that the intuitive response can lead to quicker and more accurate reasoning, contrasting the abstract nature of letters and numbers, which can confuse participants.
"Why is it so much more difficult for us to solve the problem when it's abstract like this?"
The Wason selection task, which has been studied for over 60 years, presents a challenging logical problem that becomes significantly more difficult when translated into abstract forms involving numbers and letters.
Participants perform quite well when the task is framed with relatable elements, such as beer and ages, where nearly everyone can derive the correct answer. However, with abstract symbols, performance drops to only about 4-10% accuracy.
This discrepancy raises questions about whether the difficulties lie in the nature of cognitive abilities or reflect a deeper aspect of human reasoning.
"There was one paper that said the strongest correlation is whether you have taken logic classes."
The few individuals who solve the task correctly may be categorized as "exceptional" or lucky guessers, with some studies suggesting a strong correlation with prior education in logic.
People familiar with logical reasoning principles, such as modus tollens, tend to perform better on this task, indicating that mathematical or formal logic skills may enhance reasoning capabilities.
"Modus ponens is the easy one, where we say, 'Here's a rule. If it rains tomorrow, Michael will stay indoors.'"
The Wason selection task tests the ability to apply conditional reasoning with logical statements structured in "if-then" formats. Understanding these statements involves recognizing the antecedent (the 'if' part) and the consequent (the 'then' part).
Modus ponens involves affirming the antecedent and logically concluding the consequent, while modus tollens allows one to deny the consequent to infer something about the antecedent.
A practical example illustrated is: "If a person is drinking alcohol, they must be over 21." From here, one can infer that if someone is drinking, they meet the age requirement. However, if it is determined that someone is not over 21, one cannot infer their drinking status due to potential other reasons for being indoors.
"These cards have P, not P, Q, not Q."
The Wason selection task uses four cards representing the variables from a conditional statement: P (the antecedent), not P, Q (the consequent), and not Q.
To correctly answer the task, participants need to demonstrate an understanding of logical relationships and how to manipulate these statements to arrive at valid conclusions.
The importance of understanding both modus ponens and modus tollens lies in how individuals navigate varying conditions to validate or refute logical statements effectively.
"If you get someone who is not over the drinking age, then you can conclude that they can't be drinking alcohol."
This example illustrates the concept of modus tollens, where a conclusion is validly drawn based on a conditional statement. If the premise that a person is not of legal drinking age holds true, we can deduce that they are not consuming alcohol.
However, affirming the consequent, which occurs when one assumes that just because someone is of legal drinking age they are necessarily drinking alcohol, is invalid reasoning. This distinction highlights common logical fallacies that people encounter.
"The difficulty of the Wason selection task suggests that the human brain does not possess an innate ability for modus tollens."
The discussion emphasizes that the Wason selection task reveals a challenge faced by individuals in logical reasoning, particularly in applying modus tollens effectively.
It is posited that although humans have evolved in understanding logic, we lack an inherent grasp of logical principles since they are not naturally inscribed in our minds.
"This task and the fact that the social versions are so much easier is clearly evidence that our reasoning abilities evolved for social reasons, not for truth-finding reasons."
Researchers Cosmides and Tooby propose that our reasoning abilities are better suited to social contexts. They suggest that humans have evolved to prioritize duties and obligations configured by society rather than abstract logical truths.
The Wason selection task's versions illustrate this distinction; descriptive tasks involve straightforward interpretations while deontic tasks require understanding of rules or obligations created by humans.
"We care more about 'may I do this' than 'can I do this.'"
The conversation reflects on how humans are more inclined to engage with social obligations rather than abstract truths. This suggests a preference for rules that govern behavior in social contexts.
While this perspective has merit, there is acknowledgment that truth-finding also plays a role, albeit one that is often overshadowed by social reasoning.
"The Wason selection task shows that we are poor at finding counterexamples or even motivated to seek them."
The focus on counterexamples is critical in testing hypotheses. Despite the logic that finding a counterexample suffices to prove a rule false, individuals tend to prioritize examples that confirm their assumptions.
A study involving shape boxes compellingly illustrates this point, demonstrating that participants often seek confirming evidence instead of actively searching for disconfirmations that challenge the initial hypothesis.
"The key point about science is essentially trying to find things that break your own theorem."
Popper's philosophy emphasizes the importance of skepticism in scientific inquiry, suggesting that researchers should actively seek out evidence that could potentially disprove their theories.
The historical tendency to gather confirming evidence instead of challenging one's own assertions underscores a vital aspect of scientific growth and understanding, revealing how intuitive reasoning often fails in scientific contexts.
"It's the same as your black shapes; people do not go hunting for the black shapes, but Einstein was someone who knew that you had to."
The discussion revolves around how people often fail to seek counterexamples when testing hypotheses. Instead, they predominantly look for confirmation that supports their beliefs, a tendency seen in both scientific reasoning and everyday decision-making.
Einstein’s approach to scientific inquiry illustrates a unique mindset; he actively sought out counterexamples to challenge his theories, reflecting a deeper understanding of the necessity for critical thinking in developing scientific ideas.
The speaker emphasizes that true reasoning involves an openness to potentially being wrong, suggesting that this willingness to explore counterexamples distinguishes effective thinkers from the average person.
"The point is all right, yeah, I'm still a bit impressed."
The implications of human reasoning are further examined, indicating that reasoning originally evolved to facilitate social interaction and cooperation rather than purely analytical tasks.
This social function of reasoning means that humans often instinctively generate rationalizations for their decisions after the fact rather than genuinely seeking to understand the truths behind them.
The work of Hugo Mercier and Dan Sperber is highlighted, positing that conclusions often shape the reasons we provide, supporting the idea that humans confabulate justifications for their beliefs based on intuitive feelings.
"When a whole group of people refuse to accept counterexamples, that's when things can get pretty dangerous."
The tendency to resist counterexamples can lead to significant issues, as seen historically with scientific communities ignoring evidence that contradicts established theories.
The example of the platypus is used to demonstrate how scientists in the past clung to their classification systems and failed to adapt when confronted with evidence that challenged their understanding of biology.
The discussion explores that, rather than reassessing their theories in light of new information, individuals and groups often search for ways to dismiss or explain away counterexamples, thereby hindering progress.
"Many hands make light work."
Confirmation bias is framed as a byproduct of humans’ social nature, where individuals might focus on supporting evidence for their own theories while collaborating with others.
This division of labor in seeking confirmation allows groups to pool insights while minimizing cognitive overload that would occur if everyone individually sought all possible evidence.
The discussion encourages a shift towards embracing different perspectives, noting that listening to opposing views is essential for collaborative problem-solving and overcoming biases in reasoning.
"The only way that people make decisions is in an emotional way."
People often believe they make decisions based on rational statistics, but ultimately, their choices are driven by emotions. Even those who engage with data and scientific reasoning have an underlying emotional relationship with that information.
Individuals are not easily swayed by numbers or data because decision-making is fundamentally influenced by social aspects and personal beliefs rather than factual content.
"It's called the deficit model because it's essentially saying that the only problem is that the public has a deficit of knowledge."
The deficit model suggests that the public's issues stem from a lack of information; people simply need to be educated with the correct facts. However, this perspective is often viewed as arrogant and reductive, as it ignores individual worldviews and values.
This model is ineffective. Relying solely on providing factual information does not ensure that people will change their opinions or behaviors.
"Collectively, like all voting together, I just don't think there's a solution that's better than that."
Humans are inherently social beings, and our decision-making processes are deeply intertwined with our social interactions. The idea of the "wisdom of the crowd" suggests that collective decision-making can lead to more balanced outcomes than relying on individual opinions.
Randomized selection for leadership roles, such as a lottery for government positions, could diversify perspectives and lead to better governance than what is currently achieved through conventional political processes.
"It accepts the messiness of human nature."
Reasoning is often idealized as a pure mathematical process, but in reality, it is messy and influenced by human nature. Our evolved traits prioritize social connections and collaboration, highlighting the need for inclusive decision-making approaches.
Embracing our imperfections and social tendencies can lead to more effective governance and community engagement, as it acknowledges the complexity of human thought and behavior.
“When we say things to each other like, ‘Oh hey, how's it going?’ I'm not literally asking, ‘Tell me how things are going.’”
Phatic communion refers to social interactions that affirm human presence rather than necessitating specific information exchange. These kinds of exchanges are common in everyday language, acting as social glue.
For example, saying "You too" in response to "Have a nice flight" is not a literal acknowledgment of the other person's flight; rather, it serves to acknowledge the other person's presence.
These interactions highlight that language can function as a form of communion, emphasizing connection over actual inquiries.
“For them, it was just phatic communion... ‘Beep beep, I am human too.’”
Differences in phatic expressions can lead to confusion for newcomers. An American moving to London found it perplexing when locals would ask, "You all right?" since it was interpreted literally.
This illustrates how phatic communication varies across cultures and regions, evolving over time, and often meant just to acknowledge each other's presence.
Phatic expressions evolve, leading to generational changes in language use, where younger people might say "Say less" to denote understanding without needing to elaborate.
“What was the phatic communication of sort of 1865?”
The concept of phatic communication is not static but continuously changes, influenced by societal norms and language evolution. Expressions used in the past may not resonate in the same way today.
Historical phatic exchanges might have included phrases or terms that seem archaic now, reflecting a time when social norms differed significantly from contemporary expectations.
“It's a very insightful book that really interrogates the moral rules that we fully accept as a society.”
Discussions in the video touch on profound moral questions, suggesting that often, we may reach conclusions about morality before considering the reasoning behind them.
Jonathan Haidt's "The Righteous Mind" is referenced as a pivotal text that challenges conventional thinking regarding moral judgments and societal norms.
The implications of social rules and taboos are explored, illustrating that we often unquestioningly accept certain moral constructs without exploring their complexities.
“Did anyone do anything morally wrong? That's our question to you. Let us know in the comments below.”
An ethical scenario regarding a family consuming their deceased pet raises questions about morality and societal acceptability.
The discussion encourages audience participation by inviting viewers to consider and reflect on moral judgments, demonstrating how subjective and complex moral reasoning can be.
"This is a really great example of it definitely feeling wrong, but it's quite hard to say why."
The discussion revolves around moral intuitions, specifically how certain actions can feel inherently wrong despite lacking logical justification.
Jonathan Haidt presents the concept of "harmless taboo violations," where individuals recognize a taboo but struggle to articulate why it is wrong.
In his experiments, he created scenarios where traditional harms typically associated with taboo actions are removed, leading participants to still feel that these actions are morally wrong without clear reasons.
For instance, in a case where individuals consume their deceased pet, all potential objections are nullified—no harm is caused, and no one witnesses the act—yet participants still maintain a moral aversion to it.
This reveals that moral beliefs often stem from immediate instinct rather than rational reasoning, suggesting that people may justify their feelings post hoc rather than deriving their moral stance from logic.
"If you guys have any questions for us, any despicable, disgusting, perverted moral quandaries, email them right over to us."
The hosts encourage viewer participation by inviting questions related to moral dilemmas, indicating a desire for interactivity and audience engagement.
They remind viewers to check out their newsletter for more content and updates, reinforcing the connection between the show and its audience.
There is a fun and light-hearted tone as they reference a puzzle mentioned earlier in the episode, creating an inclusive environment where listeners can share their thoughts and responses in the comments.
Overall, this segment highlights the importance of community feedback and creates anticipation for upcoming episodes.
