  In this second article, we show a simple use of the Ignorance as defined in
"Jaynes & Shannon's Constrained Ignorance and Surprise". By giving an example
about the journey of a person, we believe to show some simple, obvious but
mathematically encoded philosophical implications about how we could think,
learn and memorize. In this basic model we will separate how we learn from
Ignorance, and how we anticipate the world using Bayes formula, both should
however be more entangled to best reflect reality. In fact, as we have seen
after achieving this work, applying Ignorance on the system constituting a
person finally turns out to be the global approach of its local counterpart on
systems like neurons, cells and other complex probabilistic systems, described
using the free energy principle, a much more complex and detailed approach. The
aim of this article is therefore to show, as seen from a person, another aspect
of the application of the free energy principle which represents the
constrained Shannon's entropy, and leads to Bayes'formula. We show that, using
only ignorance as a single quantity, and its minimization as the main process,
we can take into account his understandings, assertions, doubts and assumptions
about how he perceives the world, by describing them mathematically.
