# Bifurcation, Cartesian, Correlated, Galois, Indexical

This lesson introduces the following analysis patterns: bifurcation point, Cartesian trace, correlated discontinuity, Galois trace, indexical trace.

## We'll cover the following

## Bifurcation point

The following two software traces from working and non-working software
environments are a perfect example of the pattern. We borrow the name of
**bifurcation point** pattern from catastrophe theory:

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