The I=PAT formula is an identity. I represents environmental impact, P population, A affluence, and T technology. While human population (that is, number of people) and affluence (that is, wealth per person) have tended to push I upwards over the last few thousand years, the technology factor (impact per wealth) has tended to decrease I by providing increasingly efficient means for accomplishing tasks. Because I is calculated as the product of P, A, and T, each factor is equally important.
Thus, while population growth certainly contributes to environmental impact, so do affluence growth and technological improvement. Welcome, G. Septem. Now that you have joined us, we will watch with fascination how wealthy you become, and how quickly technology improves during your lifetime.
More biolaw at LEXVIVO.