The statement is valid in the sense that if humans are unable to transform the unsustainable J-mode of population growth to the sustainable S-mode, the population may eventually crash due to the depletion of natural resources, environmental degradation, and other factors. The J-mode of population growth is characterized by rapid and exponential growth, which can lead to a range of environmental and social issues, including deforestation, soil erosion, water scarcity, and increased greenhouse gas emissions. In contrast, the S-mode of population growth is characterized by a more gradual and sustainable increase in population, which can help to balance the needs of people with the needs of the environment.
If humans are unable to transform the J-mode of population growth to the S-mode, there are a number of factors that could contribute to a population crash. For example, the depletion of natural resources such as water, land, and energy could result in a decline in the quality of life, which could lead to social unrest and conflict. Environmental degradation could also lead to a decline in the availability of food, which could result in famine and disease. Additionally, the increase in greenhouse gas emissions could lead to more frequent and severe climate events, such as droughts, floods, and storms, which could have devastating impacts on human populations.
To avoid a population crash, it is important to take action to transform the J-mode of population growth to the S-mode. This can be done through a range of measures, including improving access to family planning services, promoting sustainable agriculture and forestry practices, investing in renewable energy, and reducing waste and consumption. By taking these steps, it is possible to achieve a more sustainable balance between population growth and the environment, which can help to ensure a healthy and prosperous future for people and the planet.