Much of the work done in human semiotics involves analyses of semiotic codes.
Semiotics and semiotic codes are often treated like language or languages for which a grammar can be found.
One obvious problem with this sort of approach is semiotics indicates a set that is much broader than language. Stated another way, language is a subset of semiotics.
Human semiotics also include music, imagery, gesture, facial expression, emotion, and anything else that can communicate either within one mind or between two or more minds.
It is very helpful to analyze semiotic codes and it is very helpful to try to figure out how cultures, groups, and individuals use them. We can compare the semiotics of heroism in Chinese culture to that of French culture. Or the semiotics of gift-giving in American culture to that of Mexican culture. We can analyze movies, literature, science, and even engineering based on semiotic codes we have abstracted out of them.
We can do something similar for human psychology.
Analyses of this type are, in my view, general in that they involve schema or paradigms or grammars that say general things about how semiotic systems work or how individuals (or semiotic signs themselves) fit into those systems.
This is all good and general analyses of this sort can be indispensable aids to understanding.
General semiotic analyses are limited, however, in their application to human psychology because such analyses cannot effectively grasp the semiotic codes of the individual. Indeed general analyses are liable to conceal individual codes and interpretations more than usefully reveal them.
This is so because all individuals are always complex repositories of many general semiotic codes as well as many individual ones. And these codes are always changing, responding, being conditioned by new circumstances and many kinds of feedback.
Individuals as repositories of many codes, both external and internal, are complex and always changing and there is no general analysis that will ever fully capture that complexity.
For somewhat similar reasons, no individual acting alone can possibly perform a self-analysis that captures the full complexity of the many and always-changing semiotic codes that exist within them.
Self-analysis is far too subject to selection bias, memory, and even delusion to be considered accurate or objective. The individual is also far too complex for the individual to grasp alone. How can an individual possibly stand outside itself and see itself as it is? Where would the extra brain-space come from?
How can a system of complex semiotic codes use yet another code to successfully analyze itself?
Clearly, no individual human semiotic system can ever fully know itself.
To recap, 1) there is no general semiotic analysis that will ever capture the complexity of individual psychology, and 2) no individual acting alone can ever capture the complexity of the semiotic codes that exist within them.
Concerning point two, we could just as well say that no individual acting alone can ever capture the complexity of their own psychology.
We are thus prevented from finding a complex analysis of human psychology through a general analysis of semiotics and also through an individual’s self-analysis when acting alone.
This suggests, however, that two individuals acting together might be able to glimpse, if not grasp, how their complex semiotic codes are actually functioning when they interact with each other. If two individuals working together can honestly observe and discuss moments of dynamic real-time semiotic interaction between them, they should be able to begin to understand how their immensely complex and always-changing psycho-semiotic codes are actually functioning.
An approach of this type ought to work better for psychological understanding of the individuals involved than any mix of general semiotic analyses applied to them. Indeed, prefabricated, general semiotic analyses will tend to conceal the actual functioning of the idiosyncratic semiotics and semiotic codes used by those individuals.
The FIML method does not apply a general semiotic analysis to human psychology. Rather it uses a method or technique to allow two individuals working together to see and understand how their semiotics and semiotic codes are actually functioning.