๐ The world population is about to reach 8 billion, a significant milestone in history.
๐ฎ We explore three questions: How does 8 billion compare to the total number of people who have ever lived? How many people will there be in the future? Can we have a positive impact on the future?
โณ If you were to meet every person in the world, it would take 22,800 years without eating or resting. Currently, around 11.7 billion people have lived, approximately 6.8% of all human history.
๐ The video discusses the calculation of how many people might ever exist.
๐ข The population growth can be described using a mathematical function.
๐ The population growth is influenced by the availability of space and natural resources.
๐ The world's population is projected to reach around 10.4 billion by the end of the century.
โณ With improving life expectancy, education, and income levels, birth rates are expected to decline, leading to population stability rather than growth.
๐ถ On average, there will be 1.27 billion births per year, renewing the population every 82 years.
๐ The world's population can be modeled as roughly constant, with fluctuating birth rates over time.
๐ถ The current best estimate is that there will be approximately 127 million births per year starting from 2100.
โณ Different scenarios are considered for the future lifespan of the human species, ranging from a relatively short time to a more typical timeframe for mammalian species.
๐ In the next 800,000 years, the global population is projected to reach 10.1 quadrillion, 12,625 times the current population.
๐ The Earth can support life until the Sun's hydrogen depletion, which is estimated to occur in about 5 billion years.
๐ข The future population is estimated to be 127 quadrillion, almost 16 million times the current population.
๐ There is a possibility of a vast number of people existing in the future, potentially exceeding the current population of 11.7 billion.
๐ With advancements in physics and space exploration, it is feasible for humans to live outside of Earth, even beyond the solar system.
๐ The range of possibilities for the future of humanity is vast, from a short-term future to a potential population of 100 trillion people.
๐ค While there are uncertainties, it is important to consider how we can positively impact future generations and strive for the best outcome.
๐ The video discusses two main categories: survival risks and improving the future for humanity.
๐ฅ The main source for these categories is a book called 'The Thing We Owe to the Future' by Will MacAskill.
๐ The video emphasizes the importance of these ideas and encourages viewers to check out the book.