  Two models of opinion dynamics are entangled in order to build a more
realistic model of inflexibility. The first one is the Galam Unifying Frame
(GUF), which incorporates rational and inflexible agents, and the other one
considers the combination of Continuous Opinions and Discrete Actions (CODA).
While initially in GUF, inflexibility is a fixed given feature of an agent, it
is now the result of an accumulation for a given agent who makes the same
choice through repeated updates. Inflexibility thus emerges as an internal
property of agents becoming a continuous function of the strength of its
opinion. Therefore an agent can be more or less inflexible and can shift from
inflexibility along one choice to inflexibility along the opposite choice.
These individual dynamics of the building up and falling off of an agent
inflexibility are driven by the successive local updates of the associated
individual opinions. New results are obtained and discussed in terms of
predicting outcomes of public debates.
