Why the “Population Bomb” Never Exploded

by Nicholas Vardy
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"The battle to feed all of humanity is over. In the 1970s the world will undergo famines - hundreds of millions of people are going to starve to death..."

- Paul R. Ehrlich, The Population Bomb

Published in 1968, Paul R. Ehrlich’s book The Population Bomb sold more than 3 million copies. The book turned this Stanford professor into his generation’s academic rock star.

Ehrlich became the only author Johnny Carson interviewed for an entire hour on The Tonight Show. In 1990, he won The Crafoord Prize - ecologists’  version of the Nobel Prize.

I have an unusual personal connection with Ehrlich's book.

Back in the 1970s, each classroom of my Pittsburgh public grade school had dozens of copies of The Population Bomb lining its bookshelves.

I don’t recall ever actually studying The Population Bomb. But it’s clear that Pittsburgh Public Schools thought they might need to prepare us for the ensuing global famine.

Of course, Ehrlich’s prediction could not have been more wrong.

The Population Bomb Fizzles

Fast-forward to 2018, and the obesity rate in the U.S. is among the highest in the world.

The biggest health problem isn’t that Americans are starving.

It’s that Americans are eating too much.

History is littered with experts - and not just leaders of fringe cults - who predicted the end of the world and got it wrong.

Ehrlich is just one in a long line of such doom-and-gloomers. His thinking traces directly back to the original Cassandra of famines, Thomas Malthus, the English economist best known for his theory of population.

In his 1798 An Essay on the Principle of Population, Malthus argued that as human populations grow exponentially, food production will not keep pace.

His conclusion?

Unless men refrain from “pursuing the dictate of nature in an early attachment to one woman," the world will run out of food and famines will ensue.

No doubt inspired by Malthus, Ehrlich dutifully limited his own family to one child.

A Famously Bad Commodity Investment

University of Maryland economist Julian Simon was a vociferous critic of the Ehrlich-inspired famine mania of the 1970s.

He wanted to put Ehrlich’s predictions to the test.

So in 1980, Simon issued a challenge to all Malthusians.

He offered to let anyone pick any natural resource - grain, oil, coal, timber, metals - and any future date.

Any Malthusian would argue that as the world’s population increased and the commodity became scarcer, its price should rise.

Simon was willing to take the opposite side of the bet, saying that the price of the commodity would decline instead.

Ehrlich snidely accepted “Simon's astonishing offer before other greedy people jump in."

He bet $1,000 and covered the price of five metals over a period of 10 years.

By the time 1990 rolled around, the world's population had grown by more than 800 million, or 17.8% - the highest rate of increase over the course of a decade in history.

Yet the price of each of the commodities in the Simon-Ehrlich bet tumbled. The price of copper had fallen by 3.5%. Tin had collapsed by 72%.

In short, Ehrlich lost the bet decisively.

Simon offered to raise the stakes of the next wager to $20,000. Ehrlich declined.

The Power of Human Ingenuity

On its face, the Simon-Ehrlich bet was about the future price of five metals between 1980 and 1990.

On a deeper level, it was about a conflict of visions concerning the future of humanity.

Was mankind’s future constrained by the Earth's ever-depleting resources... or by the limits of human ingenuity?

The verdict from history is clear.

Charles Maurice and Charles W. Smithson at Texas A&M University studied the history of natural resources over 10,000 years.

They found that temporary scarcities in natural resources are the norm.

They also found that same temporary scarcity always led to an improved substitute.

The Greeks' transition from the Bronze Age to the Iron Age 3,000 years ago was forced by a shortage of tin.

The rise of coal followed timber shortages in 16th-century Britain.

The shortage of whale oil in 1850 led directly to the first oil well in 1859.

The lesson?

Human ingenuity has always been successful in overcoming crises that once seemed inevitable.

Ehrlich was right about one thing: The world's population has continued to expand.

Today, the global population stands at 7.6 billion.

That’s double the 3.8 billion when Ehrlich published The Population Bomb.

And yet, despite Ehrlich’s predictions, no devastating famine threatening humanity’s existence ever ensued.

The reason is straightforward.

Food production increased faster than the population - a pattern that has repeated since Malthus.

Today, the average person is healthier, wealthier and better fed than in 1968. Infant mortality has declined. Life expectancy has increased.

Ironically, both Japan and Europe do have a population problem. But the problem is not the threat of famine due to too many mouths to feed.

It’s that women are having too few children to maintain current population levels.

Here is a final irony...

Ehrlich has spent his entire academic career ensconced at Stanford University - the intellectual Godfather of Silicon Valley.

Silicon Valley, in turn, embodies the optimism and progress that has always overcome the relentless logic of Malthusian doom and gloom.

I can’t help but wonder how an academic who spent his life surrounded by symbols of human progress can be so pessimistic.

Yet at 85, Ehrlich remains unapologetic for his (so far) misguided predictions.

Ehrlich has said that if he wrote The Population Bomb today, he’d be even more apocalyptic than he was in 1968.

Like all doom-and-gloomers, Ehrlich won’t concede he’s wrong.

He’s just “early...”

Good investing,


Thoughts on this article? Leave a comment below.

A Play on the Overabundance of Food

As Nicholas said, overeating is a much bigger problem than food shortages here in the U.S. That’s a testament to how wrong Malthus and Ehrlich were in their predictions of incipient global famines.

Many Americans are more concerned with shedding weight than packing it on. Alexander Green is well aware of this phenomenon - and he has helped his Momentum Alert subscribers capitalize on it with an investment in Planet Fitness (NYSE: PLNT).

Here’s Alex introducing the pick last month...

Headquartered in Newington, New Hampshire, Planet Fitness franchises and operates fitness centers throughout the U.S. and Canada. The chain boasts 1,432 facilities with over 8.7 million members.

The company is growing at a heady pace, with the number of new facilities increasing by more than 20% annually. Today it ranks No. 1 in gym searches online in 40 states as well as No. 1 nationally.

The company has two secrets to its sauce. The first is that it promises an environment with “no gymtimidation.” The firm works hard to deliver a judgment-free setting where people of all body shapes and sizes are encouraged to participate. (The company does not permit “lunky” behavior: grunting loudly or slamming down weights.)

The second is that it’s cheap... really cheap. You can choose to pay $10 a month - not much more than a Starbucks latte with all the fixings - or $39 a year. That includes unlimited fitness training and guest privileges at any of its locations.

The ultra-low cost is the key to the company’s success. Ordinarily, fitness centers are on a hamster wheel, forever trying to find new members to replace the ones who quit.

But $39 a year - or $10 a month - is so cheap that most members have no compelling reason to drop out. (Indeed, many probably never notice the charge on their cards.)

And with more than 1,400 facilities around the country, membership is ideal for road warriors and other frequent travelers.

Planet Fitness has near-term plans to grow to 4,000 stores in the U.S. and is looking to expand in Europe and Latin America.

The company is also growing by eliminating the competition. Many small shops find it impossible to compete and are waving the white flag.

There will be a lot more of this in the near future. Planet Fitness has already committed to more than 1,000 new facilities to be built.

Let’s turn to the numbers. In the most recent quarter, earnings per share soared 348% on a 12% increase in sales. The company enjoys a 34% operating margin. And I expect earnings to rise from $0.82 a share this year to more than a dollar in 2018.

- Samuel Taube with Alexander Green

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