In any city project, residents' behavior is a invisible force that determines success. One skeptical neighbor can slow down solar panel installation across an entire block: their caution triggers a rise in disorder. To predict this effect, scientists build a standard model from thousands of independent agents: each making their own decisions. The prototype of such systems was envisioned by John von Neumann, pondering self-replicating automata. But the real breakthrough is that the model captures collective behavior, much like astronomers deduce galaxies from the motion of invisible matter. A trial in a British city showed: the key to the energy transition isn't generous subsidies but the neighbor-mimicry effect. A digital twin turns the chaos of human habits into a clear plan.
The very first digital twins were used by NASA engineers to repair spacecraft without touching them.
Like in the movie 'The Matrix,' but this simulator helps build a better future rather than masking reality.