Energy-knowledge plateau: (noun) The point at which energy-knowledge acceleration has reached its limit, and it is no longer possible to find a more efficient energy source that can improve the rate of knowledge acquisition. It emphasizes the idea that the rate of knowledge acquisition has leveled off or reached a maximum point, and that further improvements in energy efficiency will not lead to significant increases in the rate of knowledge acquisition.
The energy-knowledge plateau was reached when no more energy source was found to be more efficient than the current one, limiting the rate of knowledge acquisition and stalling further research.