The Evolution of Everything: How New Ideas Emerge | Matt Ridley | Talks at Google

The Evolution of Everything: How New Ideas Emerge | Matt Ridley | Talks at Google

Introduction

Matt Ridley introduces himself as a writer and columnist, mentioning his previous book "The Rational Optimist" which highlighted the improvements in human living standards. He discusses the concept of innovation and its role in societal progress.

Matt Ridley's Background

  • Matt Ridley is a writer and columnist.
  • He has previously written a book called "The Rational Optimist" about improvements in human living standards.
  • The average person on the planet is earning three times as much as they were 50 years ago.
  • People are living longer, burying fewer children, and overall experiencing increased wealth, health, happiness, intelligence, kindness, cleanliness, peace, freedom, and equality.

Innovation and Evolution

Matt Ridley explores the connection between innovation and evolution. He explains that innovation is driven by the combining and recombining of ideas. He draws parallels between biological evolution through gene recombination and societal evolution through idea exchange.

Innovation as Idea Recombination

  • Innovation involves combining existing technologies to create new ones.
  • Ideas from different fields can be combined to generate novel solutions.
  • Innovation occurs when people meet and exchange ideas.
  • Ideas have "sex" with each other to produce new ideas.
  • This process is similar to biological evolution through gene recombination.

Biological Evolution by Natural Selection

  • Biological evolution depends on the recombination of genes through sexual reproduction.
  • The environment selects advantageous genetic combinations for survival.
  • Complex organisms can emerge without a plan or designer through natural selection.

Societal Evolution by Selective Survival

  • Human society changes in a similar way to biological evolution.
  • Information systems undergo recombination of information leading to selective survival of certain ideas.
  • Progressive change occurs incrementally without top-down planning or design.

Ordinary People and Darwinian Evolution

Matt Ridley emphasizes that important changes in society are driven by the interactions of ordinary people rather than top-down plans. He highlights the power of Darwinian evolution by natural selection as a transformative idea.

Darwinian Evolution as a Transformative Idea

  • Darwinian evolution by natural selection is a powerful concept.
  • It challenges traditional notions of design and planning.
  • It explains complexity, order, and fit between form and function without intentional design.
  • The human eye is an example of a complex organ that emerged spontaneously without prior planning.

Anti-Elitist Perspective

  • The book promotes an anti-elitist view, emphasizing the role of ordinary people in driving societal change.
  • Important changes in human living standards are not solely driven by elites or top-down plans.

Conclusion

Matt Ridley concludes his talk by highlighting the significance of biological evolution and its application to societal progress. He encourages understanding the bottom-up nature of change and the importance of idea exchange for innovation.

Significance of Biological Evolution

  • Biological evolution serves as a model for understanding societal change.
  • Understanding the principles of evolution can help explain progress in human living standards.

Importance of Idea Exchange

  • Innovation thrives where people can meet and exchange ideas.
  • Ideas have the potential to combine and recombine, leading to new technologies and advancements.

This summary provides an overview of key points discussed in the transcript. For more detailed information, please refer to the corresponding timestamps.

Trial and Error in Human Behavior

This section discusses the concept of trial and error in various aspects of human behavior, including music, government, and innovation.

Trial and Error as a Driver of Change

  • Trial and error is a fundamental process that drives change in society.
  • It is comparable to natural selection, where different ideas or approaches are tested, some survive while others do not.
  • In the early stages of development, there is a wide range of experimentation and different ways of doing things.
  • Examples include the designs of early airplanes, which had various configurations before settling on the best designs.

The Importance of Trial and Error

  • Trial and error play a significant role in human innovation.
  • Often, we mistakenly believe that the world operates in a top-down manner with clear plans or designs.
  • This misconception can also be observed in biological evolution with the persistence of intelligent design beliefs.
  • Recognizing the bottom-up nature of design in both natural and human systems challenges our understanding.

The Concept of Skyhooks

  • The metaphorical concept of skyhooks represents top-down explanations or shortcuts for how things came into existence.
  • Skyhooks do not exist but are often used to explain intelligent design theories.
  • Challenging this notion helps us understand that many phenomena evolve gradually through incremental changes.

Evolution in Human Affairs

This section explores examples of evolution in human affairs such as music genres, gods' perception, and governments' development.

Evolution in Music Genres

  • Music genres change over time through gradual modifications and building upon previous styles.
  • Different musical styles can merge to create new genres through descent with modification.

Evolution of Gods

  • Gods have evolved throughout history from vengeful beings to benevolent spirits.
  • This change can be observed across different societies at different times.
  • The evolution of gods is ongoing, challenging the notion that they are static and unchanging.

Evolution of Governments

  • Governments have evolved from their origins as protection rackets, where a strong individual monopolizes violence in exchange for maintaining peace.
  • This concept can be seen in contemporary examples such as prison gangs imposing violence monopolies within prisons.

The Procrustean Nature of the Theory

This section discusses the author's approach to pushing the idea of bottom-up design and acknowledging potential limitations.

Squeezing Everything into the Theory

  • The author acknowledges that their book may be seen as "procrustean," attempting to fit everything into their theory.
  • Some chapters may be more persuasive than others, but the goal is to challenge existing perspectives and invite pushback.

Recognizing Spontaneous Order

  • The author aims to challenge the perception that someone is always in charge or that things are meticulously planned.
  • Many aspects of society exhibit spontaneous order rather than top-down control.
  • The intention is to encourage people to reconsider their understanding of how things operate.

The Concept of Skyhooks

This section delves deeper into the metaphorical concept of skyhooks and its association with intelligent design theories.

Skyhooks as Mystical Explanations

  • Skyhooks represent mystical shortcuts used to explain complex phenomena, such as claiming a creator designed human bodies or eyes.
  • These explanations bypass gradual evolutionary processes and rely on supernatural intervention.
  • Unlearning our tendency to seek skyhooks helps us better understand natural and human systems.

Examples of Evolution in Human Society

This section provides additional examples illustrating evolution in various aspects of human society.

Evolution in Music Genres (Continued)

  • Music genres continue to evolve by building upon previous styles and incorporating new elements.
  • The process involves incremental changes and the fusion of different genres.

Evolution of Gods (Continued)

  • The perception and characteristics of gods continue to evolve in different societies.
  • This ongoing evolution challenges the notion that gods are unchanging or static entities.

Evolution of Governments (Continued)

  • Governments can be seen as evolving entities, with historical origins rooted in protection rackets.
  • Contemporary examples, such as prison gangs, demonstrate the recreation of this monopolistic violence concept within specific contexts.

New Section

This section discusses the development of cities and the concept of human action but not human design.

The Development of Cities

  • Cities develop certain features as they reach a certain size.
  • There are scale economies in cities that are regular and predictable.

Human Action but Not Human Design

  • The phrase "human action but not human design" comes from Scottish philosopher Adam Ferguson.
  • Many things are the result of human action but not intentional human planning.
  • Examples include natural phenomena like rain clouds and man-made things like the English language.

New Section

This section further explores the concept of human action but not human design, using examples such as the English language.

Man-Made but Not Planned

  • The English language is man-made, but it was not intentionally planned or designed by any individual or committee.
  • It is a complex system with rules and structure, some of which we may be unaware of.
  • For example, frequently used words tend to become shorter, and meanings can change for infrequently used long words.

New Section

This section continues discussing man-made but unplanned phenomena, drawing parallels to other aspects such as moral sense and technology.

Examples of Man-Made But Unplanned Phenomena

  • There are many things that are man-made yet not directed by humans, such as our moral sense, religious behavior, and technology.
  • The speaker refers to Lucretius' poem "De Rerum Natura" from 2000 years ago, which describes a world consisting only of atoms and voids.
  • This understanding aligns closely with modern concepts like evolution by natural selection.

New Section

This section highlights the significance of Lucretius' poem and its influence on philosophers throughout history.

Rediscovery of "De Rerum Natura"

  • Lucretius' poem was lost for 14 centuries due to opposition from Christians but was rediscovered in 1417.
  • The poem had a profound impact on Renaissance, Reformation, and Enlightenment philosophers.
  • It presents a bottom-up view of the world, emphasizing that morality and the economy emerge from human interactions rather than being dictated by authorities.

New Section

This section delves into Adam Smith's ideas on moral sentiments and the economy.

Adam Smith's Ideas

  • Adam Smith wrote "The Theory of Moral Sentiments" before his more famous work, "The Wealth of Nations."
  • He argues that morality is determined by individuals through calibration of behavior based on others' reactions.
  • Morality is not solely defined by religious or authoritative figures.
  • Similarly, in "The Wealth of Nations," Smith asserts that the economy functions best when people negotiate among themselves based on supply, demand, and price.

New Section

This section further explores the idea that societal norms are determined collectively rather than imposed by authorities.

Consensus View of Morality

  • The speaker emphasizes that people collectively determine what is right or wrong through consensus views.
  • Priests or religious figures merely reflect society's decisions rather than dictate moral standards.

New Section

This section concludes with the notion that decentralized negotiation and market forces can produce order and sophistication in the economy.

Economy as a Decentralized System

  • The speaker reiterates Adam Smith's perspective that an economy does not require centralized control.
  • Negotiation among individuals, driven by supply, demand, and price mechanisms, can lead to surprising levels of order and complexity.

The Role of Superintending Private Industry

This section discusses the role of superintending private industry and directing it towards the interests of society.

The Duty of Superintending Private Industry

  • Adam Smith's quote emphasizes the duty of supervising and directing private industry towards the best interests of society.
  • An analogy is drawn between organizing a city like New York and a rainforest, highlighting how spontaneous order leads to efficient outcomes in both cases.
  • In contrast to Social Darwinism, this approach recognizes that evolution occurs naturally within cultures and societies without interference in human reproduction.

Evolutionary Perspective on Cultural Systems

This section explores the concept of cultural evolution and its similarities to biological evolution.

Evolution in Rainforests and Economies

  • Just as each species has its place in a rainforest, each business has its place in an economy, not due to deliberate planning but through spontaneous order.
  • Extending evolution to cultural systems is different from Social Darwinism, which advocated for interfering with human reproduction for societal progress.
  • Cultural evolution theory by Rob Boyd, Pete Richerson, and Joe Henrik demonstrates that weak selection and imperfect replication can still lead to natural selection and constructive spontaneous order.

Spontaneous Order vs. Central Planning

This section challenges the assumption that someone is always in charge or that events are either planned or disrupted by someone.

The Great Man Theory of History

  • People tend to believe that events are not random but have purpose or intention behind them.
  • However, this leads to overcrediting individuals when things go well and blaming them when things go wrong.
  • While great men can influence history, they often do so negatively. Hitler is cited as an example.

Ordinary People and Innovation

This section challenges the notion that individual inventors or geniuses are solely responsible for innovation.

The Role of Ordinary People in Innovation

  • Individual inventors or geniuses may not be as significant as ordinary people interacting with each other in producing results.
  • The example of multiple inventors independently discovering the light bulb demonstrates that innovation is often ripe and inevitable at a certain time.
  • Scientific discoveries, such as natural selection and calculus, were also made simultaneously by different individuals.

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The Dispensability of Great Scientists and Inventors

In this section, the speaker discusses the dispensability of great scientists and inventors, emphasizing that while someone needs to make discoveries, it doesn't necessarily have to be a specific individual. The speaker argues that we tend to give too much credit to the person who happens to be there at the time of a significant discovery.

Great scientists and inventors are dispensable

  • Someone would have discovered the double helix of DNA within a year if Watson and Crick hadn't done so.
  • The identity of the discoverer is not as important as the act of discovery itself.
  • We should not overemphasize the role of individuals in scientific breakthroughs.

Examples: Google and simultaneous discoveries

  • When Google came into existence in 1994, it was one among many search engines already available.
  • The concept of search engines would still exist even if Google hadn't been created.
  • Simultaneous discoveries are common in various fields, such as multiple inventors for thermometers, hypodermic needles, vaccination, etc.
  • The internet itself is an example of human action but not human design.

Evolutionary Nature of Technological Advancements

This section explores how technological advancements evolve under their own momentum rather than being solely driven by individual inventors or scientists. It highlights how technology chooses its inventors and emphasizes the importance of encouraging and drawing out innovation rather than trying to plan or control it.

Technology chooses its inventors

  • Technological advancements are often driven by an evolutionary system.
  • Inventions emerge based on existing technologies and ideas.
  • Elite scientists and inventors may resist this idea as it diminishes their perceived importance.

Simultaneous discovery and evolution

  • Kevin Kelly's book "What Technology Wants" documents multiple inventors for various inventions.
  • The internet is an example of a human action but not human design, with no central authority governing it.
  • Computing and communication advancements in the 1980s and 1990s would have led to the emergence of some form of internet even without specific individuals or organizations.

The Future of the Internet and Artificial Intelligence

This section discusses the future of the internet and its potential evolution. It suggests that artificial intelligence will likely be a collective phenomenon, similar to human intelligence. The speaker also mentions blockchain technology as an interesting development due to its ability to build trust without involving third parties.

Collective nature of intelligence

  • Human intelligence is a collective phenomenon based on sharing ideas and collaboration.
  • Artificial intelligence is expected to follow a similar pattern as a collective phenomenon.

Blockchain technology

  • Blockchain technology has the potential to enable economic activity without relying on intermediaries like governments or lawyers.
  • Satoshi Nakamoto is credited with the creation of blockchain, but it could be the result of interactions among multiple individuals.
  • The future development of the internet holds significant potential for changing our lives, with much more evolution yet to come.

Conclusion

In this final section, the speaker concludes by sharing a humorous anecdote about an elderly friend who refers to internet-related things as "internet things." The speaker acknowledges that predicting the future accurately is challenging but expresses excitement about the ongoing evolution and impact of the internet.

Humorous anecdote

  • An elderly friend in the House of Lords refers to internet-related things as "internet things."

Ongoing evolution and impact

  • The internet's evolution has only just begun, with significant development still ahead.
  • The future direction of the internet remains uncertain, but there are exciting possibilities such as blockchain technology.

Evolution and Hierarchy

The speaker discusses the concept of evolution and its relationship with hierarchy. He explores how hierarchy is present in various aspects of life, such as our nervous system, governments, and the internet. The speaker challenges the idea that evolution produces a significant amount of hierarchy and highlights examples where hierarchy may not be essential or prevalent.

Evolution and Hierarchy

  • The speaker explains that a man has decided to mimic social media behavior in real life by interacting with people on the street, sharing personal details about his life, and gaining followers.
  • Evolution is happening to all of us, as seen through the example of this man who attracts attention from two policemen and a social worker.
  • A question from the audience raises the point that evolution tends to produce hierarchy in various forms such as our nervous system, governments, and even the internet.
  • The speaker challenges this notion by stating that evolution does not produce as much hierarchy as commonly believed.
  • He gives an example from genetics where the idea of "master genes" controlling everything faded away when it was realized that genes work together in a complex network without one gene being more important than another.
  • While there may be some hierarchical elements in organizations like armies or companies, it is not necessary to structure them that way. The speaker mentions Morningstar Tomatoes as an example of a successful company without traditional hierarchies.
  • However, many companies struggle to adopt non-hierarchical structures due to existing hierarchies and resistance to change.
  • The speaker acknowledges living within hierarchies himself but argues that hierarchy comes more from top-down tendencies rather than being inherent in evolution itself.

House of Lords and Legislative Powers

In response to an off-topic question about the House of Lords' role in legislation, the speaker briefly explains recent events involving constitutional crises caused by the House of Lords challenging government measures. He provides insights into the powers and conventions of the House of Lords, highlighting its role in amending legislation rather than outright stopping it.

House of Lords and Legislative Powers

  • The speaker mentions a recent constitutional crisis caused by the House of Lords rejecting a government money measure, which had not happened since 1911.
  • He explains that there were debates about whether this action was flouting the will of the elected House of Commons.
  • The House of Lords has become more exciting recently due to the government party's weakness in that chamber compared to their strength in the House of Commons.
  • The speaker describes how the House of Lords, as an unelected Upper House, is supposed to have limited powers according to conventions and habits rather than a written constitution.
  • While it is agreed that the House of Lords should not stop legislation from passing, they play a role in amending bills through debate and discussion.

The transcript does not provide timestamps for each section.

New Section

This section provides an overview of the British political system and the role of the House of Lords.

The British Political System

  • The British political system is a democracy, with power primarily lying in the House of Commons.
  • The House of Lords serves as a revising chamber attached to the House of Commons.
  • There is currently a crisis regarding the role of the House of Lords.

The Role of the House of Lords

  • The House of Lords consists of individuals who inherit the right to stand for election.
  • Statues of barons who signed Magna Carta 800 years ago can be seen in the House of Lords.
  • Magna Carta introduced the idea that even the king must be subject to the law, which had a significant influence on other countries' founding fathers.

New Section

This section discusses patent and copyright laws and their impact on innovation.

Intellectual Property Rights

  • There is concern that intellectual property rights and protections have gone too far and are stifling invention rather than encouraging it.
  • Patents were originally intended to encourage inventors to publish their work so that others could use it, but they are increasingly used as tollbooths or barriers to entry.
  • Patent trolls refer to companies that exploit patents for revenue through lawsuits rather than promoting innovation.

Copyright Laws

  • There is criticism towards copyright laws, particularly regarding their duration after an author's death.
  • Excessive copyright restrictions can hinder the ability to quote or reproduce works, even if they are widely known.
  • The speaker questions the need for such strict copyright laws and suggests that they have been influenced by corporate interests.

New Section

This section explores the concept of memes and its relation to cultural evolution.

Memes and Cultural Evolution

  • The idea of memes, as introduced by Richard Dawkins, is seen as a useful way of understanding cultural evolution.
  • Susan Blackmore's exposition on memes is praised for providing a persuasive case for their usefulness.
  • However, there is a more recent model of cultural evolution that suggests information units can be more flexible than traditional memes, allowing for expansion and contraction.
  • While acknowledging the contribution of memes, the speaker believes that the field has evolved since then.

New Section

This section discusses the role of agency in changing and planning things, considering both top-down and bottom-up perspectives.

Reconciling Agency to Change Things

  • The concept of "better" depends on how it is defined.
  • Hitler can be seen as a top-down phenomenon, but also as a product of the environment.
  • The question is how to reconcile our own agency to change things in a world that may seem chaotic.
  • Natural selection brings order out of chaos.
  • Early 20th-century dictators like Mussolini, Hitler, Stalin emerged due to the state of technology and society at that time.
  • The invention of radio played a significant role in driving demagogue populist dictators to power.
  • Radio enabled demagogues like Oswald Mosley to spread their ideologies.
  • Bad things can evolve just like good things (e.g., computer viruses, cybercrime), but the good guys have an advantage because they operate in the light while bad guys operate in the dark.
  • Humans have agency in selecting which technologies or ideas to adopt, leading to a bias towards good things emerging from this evolutionary process.

New Section

This section explores the balance between bottom-up efforts and top-down efforts for improving humanity's future.

Bottom-Up vs. Top-Down Efforts

  • There is room for both bottom-up and top-down efforts for improving humanity's future.
  • Examples like the Apollo program demonstrate the effectiveness of top-down efforts with significant government emphasis.
  • Many people believe that space exploration is crucial for our species' future survival and diversification.

New Section

This section delves into whether relying solely on bottom-up efforts is sufficient or if there is a role for top-down efforts as well.

Role of Top-Down Efforts

  • While bottom-up efforts are valuable, there is still a place for top-down initiatives.
  • The Apollo program is an example of a successful top-down effort, but it raises the question of whether it would have emerged without government involvement.
  • Going to the moon might have been achieved by ordinary people pooling their resources over time.
  • The lack of follow-up after the Apollo program can be attributed to government priorities and the absence of a clear purpose for further exploration.

New Section

This section discusses China's one-child policy as an example of a top-down solution with mixed outcomes.

China's One-Child Policy

  • China's one-child policy was a top-down solution to address population concerns.
  • It was influenced by ideas from Western writings on population control.
  • The policy was implemented by rocket engineer [INAUDIBLE] after attending a conference in Helsinki.
  • Although the policy reduced population growth, it had negative consequences and was considered inhumane.

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New Section

This section discusses examples of evolution and the meaning of life.

Examples of Evolution

  • The speaker mentions that a bottom-up approach to evolution would be better than a top-down one, citing the Apollo program as an example.
  • The audience thanks the speaker for providing examples.

Meaning of Life

  • When asked about the meaning of life in the context of goalless evolution, the speaker humorously references "The Hitchhiker's Guide to the Galaxy" and its answer of 42.
  • The speaker personally finds it magnificent that life is ultimately meaningless but still sees value in being a product of natural processes. Charles Darwin's perspective on grandeur in this view of life is mentioned.
  • The audience member asks if any meaning can be left if everything is just goalless evolution.
  • The speaker shares their personal perspective on finding meaning in life despite abandoning the concept of purpose. Not everyone may react similarly to this idea.

New Section

This section explores the potential impact of interconnectedness and innovation on human evolution.

Interconnectedness and Innovation

  • An audience member raises a question about how interconnectedness, such as through the internet, can fuel innovation and accelerate human evolution, including plans for Mars colonization.
  • The speaker mentions that trade and the meeting and mating of ideas have historically driven innovation, giving examples like Renaissance Italy and modern-day California. They highlight how global connectivity through technology has created virtual spaces for idea exchange on a global scale.
  • The rate at which ideas are meeting other ideas is believed to be accelerating, but the expected incredible acceleration of technology predicted by some experts has not yet been fully realized.
  • The speaker notes that certain technologies may face diminishing returns, such as transport changing little compared to significant changes in communication. However, they express confidence in the continuous generation of possibilities and the steady growth of world GDP, indicating an exponential acceleration of innovation.

New Section

This section discusses the potential for future innovation and its impact on human progress.

Future Innovation and Human Progress

  • The speaker predicts that if things go well, the potential for what can be achieved with innovation for the human race is amazing. They acknowledge that challenges and brick walls may arise along the way but emphasize the tremendous possibilities.
  • The growth of world GDP indicates a steady and accelerating trajectory, with projections suggesting that by the end of this century, the average person on the planet could be three times as rich as today's average American.
  • The section concludes with an invitation for one more question from the audience regarding hierarchical behavior as a strategy in evolution.

New Section

In this section, the speaker discusses the forces of top-down and bottom-up approaches in language development and how they are reconciled.

Reconciling Top-Down and Bottom-Up Approaches to Language

  • Language development involves two opposing forces: top-down organization and bottom-up natural processes.
  • People come together to agree on linguistic terms, but it is still a bottom-up process rather than hierarchical imposition.
  • Standardization of language occurs through implicit and explicit agreements among ordinary people.
  • Attempts at top-down standardization, such as the French language committee or Esperanto, have not been very successful.
  • The internet standards provide an example of group agreement but still involve acceptance or rejection by the community at large.
  • The speaker challenges the notion that language development is primarily top-down or hierarchical.

New Section

This section explores whether language development can be both top-down and bottom-up, using examples like internet standards.

Language Development as Both Top-Down and Bottom-Up

  • The audience suggests that language development can involve both top-down and bottom-up elements.
  • They mention internet standards as an example where organized groups play a role in agreeing on communication protocols.
  • The speaker argues that even in cases like internet standards, it is more about group consensus than hierarchical control.
  • The Internet Committee for Assigned Names and Numbers (ICANN) may claim authority but might not truly be in charge.
  • While standards do emerge, they are not necessarily imposed from above.

New Section

This section delves into the relationship between top-down systems and bottom-up processes, discussing their coexistence.

Coexistence of Top-Down Systems and Bottom-Up Processes

  • The audience suggests that top-down systems often emerge due to bottom-up processes.
  • Examples include governments and systems that survive based on acceptance by the community.
  • The question arises of how to reconcile these two views and acknowledge the usefulness of hierarchies when chosen wisely.
  • The speaker agrees that hierarchies can be useful but cautions against relying too much on them.
  • They humorously mention the impracticality of an army voting on whether to attack, highlighting the need for some level of hierarchy.

New Section

In this section, the speaker emphasizes their skepticism towards excessive reliance on hierarchy in various contexts.

Skepticism Towards Excessive Reliance on Hierarchy

  • The speaker reiterates their belief that we should not be fighting wars, implying a critique of hierarchical power structures.
  • While acknowledging the usefulness of some hierarchies, they caution against leaning too heavily in that direction.
  • The audience engages in a light-hearted discussion about historical examples where hierarchical systems were effective in warfare.

Timestamps are provided for each section to help locate specific parts of the video.

Video description

THE EVOLUTION OF EVERYTHING: HOW IDEAS EMERGE, Matt Ridley’s brilliant and ambitious new book in which he explores his considered belief that evolution—in biology, business, technology, and nearly every area of human culture—trumps deliberate and intelligent design. Like his other big ideas books, The Rational Optimist and Genome, he presents his concepts in accessible and elegant prose, presenting a thesis which is sure to stir controversy and stimulate conversation.

The Evolution of Everything: How New Ideas Emerge | Matt Ridley | Talks at Google | YouTube Video Summary | Video Highlight