I’ve had those introspective moments where I find myself taking in the enormity of people surrounding me whenever I’m in a crowd.
It’s crazy enough to take in all the huge swaths of humanity occupying Times Square—it’s even crazier when I travel to other countries and observe that same phenomenon. Making my way across the street with hundreds of other Japanese residents and tourists within Shibuya Crossing is a moment I’ll never forget.
With my mind stuck on the world’s ever-growing population, I discovered there was a holiday that matches my current fascination with that topic. That special day is World Population Day, an annual global event observed on July 11 meant to bring awareness to the world’s demographic and development challenges. And right now, the global population of 8 billion+ people is certainly being met with plenty of challenges.
I went to ChatGPT with the sole goal of trying to understand the massive scale of the world’s current population. The chatbot’s world population perspective breakdown, explanation of how fast humanity is growing and shocking world population statistics blew my mind.
The world population analysis prompt
To get this experiment underway, I used ChatGPT to generate this loaded prompt to get the answers I sought about the world’s massive population:
Act as a demographer, statistician, historian, and science communicator.
Help me truly understand the scale of the world's population instead of simply giving me numbers.
Explain today's global population using vivid comparisons, thought experiments, and real-world analogies.
Include:
How many people are alive today compared to every human who has ever lived.
What percentage of all humans in history are alive right now.
How fast the population is growing (or slowing) and why.
How the population is distributed across continents and major countries.
What would happen if everyone stood shoulder-to-shoulder, lived in one city, or formed one line around the Earth.
How long it took humanity to reach each population milestone (1 billion, 2 billion, etc.).
The biggest myths people believe about overpopulation.
What population is expected to look like over the next 100 years.
The implications for food, housing, climate, technology, jobs, and aging societies.
Unexpected statistics that make the scale of humanity easier to grasp.
Present the explanation in plain English, using tables, comparisons, and memorable analogies rather than technical jargon. End with the 10 most mind-blowing population facts that most people don't know.
Putting the world’s 8 billion+ population into perspective
ChatGPT then went ahead and detailed several fascinating comparisons and observations that painted a clear picture of just how massive the world’s population truly is.
One of the statements that caught my attention was about how many humans have ever lived. It pointed out that demographers estimate that approximately 117 to 120 billion humans have ever been born. The chatbot also caught me off guard when it told me 109 to 112 billion humans have died (what a morbid fact).
ChatGPT continued its world population analysis by pointing out how it’s still growing, but that growth has slowed dramatically compared with its peak: The rate of growth is much slower than it was in the 1960s, when the world's population was growing at more than 2% per year. Today it's below 1% and continues to decline as fertility rates fall in many countries.
When the subject of the world’s population milestones came up, ChatGPT listed them all up until the current day and highlighted the years in which they happened:
- 1 billion people reached in 1804
- 2 billion people reached in 1927
- 3 billion people reached in 1960
- 4 billion people reached in 1974
- 5 billion people reached in 1987
- 6 billion people reached in 1999
- 7 billion people reached in 2011
- 8 billion people reached in 2022
The long-range population projections for the next 100 years noted that peaks around 10 to 10.5 billion people will happen during the 2080s, then remain relatively stable or slowly decline by 2100 and beyond.
ChatGPT also pointed out that the biggest growth is expected in parts of Africa, while many countries in Europe and East Asia are projected to have their population shrink.
After reading through ChatGPT’s list of the 10 most mind-blowing population facts, I asked it to feature them in a more digestible infographic. Here’s what it managed to come up with:
The takeaway
It’s so insane to fathom just how many people occupy the planet we call home. With ChatGPT mentioning that four to five babies are born every second while two people die, I sat back and just imagined how many lives are brought and taken out of this world in just a matter of minutes.
I’ll be sure to look up the global population number every year now that I’ve been made aware of the holiday meant to highlight it, World Population Day.
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