The conflation of Ehrlich with the LtG team is an extremely dead horse that people should stop beating. The Population Bomb (Ehrlich's 1968 book) was an entirely separate production, with separate teams, separate conclusions, and separate levels of academic rigor.

Furthermore, Ehrlich's PR stunt with Julian Simon of a bet during the peak of a commodity cycle was neither epistemologically sound nor a proof of absolutely anything other than markets do what markets do.

I challenge people who reach for the Ehrlich card whenever these growth conversations come up to reflect on what they're acting on and to recognize that the road of thought on LtG is dark and overwhelming. In fact, it ends at a destination that implies deep unflattering things about our fundamental capabilities as humans and role on this earth. It is natural, and human, to meet this with reactive fear. Keep this in mind as you read what follows.

I mention revisiting Limits to Growth because if you read the introduction[1] you would notice that they state their conclusions as follows:

1. If the present growth trends in world population, industrialization, pollution, food production, and resource depletion continue unchanged, the limits to growth on this planet will be reached sometime within the next one hundred years. The most probable result will be a rather sudden and uncontrollable decline in both population and industrial capacity.

2. It is possible to alter these growth trends and to establish a condition of ecological and economic stability that is sustain able far into the future. The state of global equilibrium could be designed so that the basic material needs of each person on earth are satisfied and each person has an equal opportunity to realize his individual human potential.

3. If the world's people decide to strive for this second outcome rather than the first, the sooner they begin working to attain it, the greater will be their chances of success.

Furthermore, if you look at their 30-year update [2] published in 2002, you can get a few more notable quotes:

"We still see our research as an effort to identify different possible futures. We are not trying to predict the future. We are sketching alternative scenarios for humanity as we move toward 2100." (p. xvii)

and most telling:

"Our most important statements about the likelihood of collapse do not come from blind faith in the curves generated by World3. They result simply from understanding the dynamic patterns of behavior that are produced by three obvious, persistent, and common features of the global system: erodable limits, incessant pursuit of growth, and delays in society’s responses to approaching limits." (p. xviii)

The story Limits To Growth is trying to communicate is still pending and will be until ~2072. Nothing has failed and their nuanced commentary on the complexity of the issue has only aged well.

[1]: https://www.clubofrome.org/publication/the-limits-to-growth/

[2]: https://www.peakoilindia.org/wp-content/uploads/2013/10/Limi...