The phase of an S-curve during which the rate of growth is declining and the system approaches the carrying capacity of its substrate. Applied to the industrial civilization curve, the deceleration phase is the period in which the frameworks that fit acceleration (throughput, extraction, capital mobility) begin to work against the system’s capacity to reproduce itself.
The deceleration reading of the current industrial curve rests on a convergence of independent indicators: transgression of six of nine planetary boundaries (Richardson et al. 2023); falling final-stage EROI (Brockway et al. 2019); wage-productivity divergence (EPI 2025); debt saturation at 328 percent of world GDP (IIF 2025); diminishing returns to complexity (Tainter 1988); and demographic transition. Each is documented individually. Their synthesis into a single S-curve reading is Structural Inference and is the interpretive frame the BioConomy thesis rests on.
The deceleration phase is the phase during which Retention Economics and its regenerative extension become structurally fit rather than structurally premature.
Related terms
Sources
- Richardson et al. (2023). Earth beyond six of nine planetary boundaries. Science Advances 9, eadh2458
- Brockway et al. (2019). Estimation of global final-stage EROI for fossil fuels. Nature Energy
- Tainter, J. (1988). The Collapse of Complex Societies
Provenance
Coined within the BioConomy corpus as the phase label paired with acceleration. See Deceleration Indicators for extended treatment.