Taking as reference the long-wave theory, in this paper we try to give a
fully endogenous explanation of the factors triggering the technological
revolutions – one of the main causes of a new long upswing. We extend the
traditional macro and meso economic analysis by presenting a behavioural
model in which entrepreneurship and radical uncertainty play a crucial role
in determining the dynamics of the system. Our theoretical analysis is then
formalized in a model, whose consistency is verified through numerical
simulations.