Perspectives
Where the protocol Analogy Breaks
Network protocols try to minimize ambiguity. Human language routinely exploits ambiguity, metaphor, implication and incomplete information because speakers infer one another's…
Calling language a protocol is useful for about five minutes. The comparison can expose structure that ordinary language hides. The problem begins when the comparison stops behaving like a tool and starts behaving like a claim about what the thing literally is.
Protocol thinking clarifies syntax, encoding, convention and error handling, and it shows why successful communication requires some shared structure.
What the metaphor gets right
Protocol thinking clarifies syntax, encoding, convention and error handling, and it shows why successful communication requires some shared structure.
This is why engineering metaphors are so attractive. They compress a complicated relationship into something we can manipulate mentally. In the best case, the metaphor produces predictions and sharper questions.
What it smuggles in
Network protocols try to minimize ambiguity. Human language routinely exploits ambiguity, metaphor, implication and incomplete information because speakers infer one another's intentions.
Engineering words often carry hidden assumptions: a designer, a specification, modular ownership, explicit goals, a stable machine underneath the program. Those assumptions must be tested rather than inherited.
Return to the physical story
Human language combines sound or gesture, syntax, semantics, pragmatics, memory, social inference and cultural learning. Meaning depends on shared contexts as well as formal structure.
Once the mechanism is back in view, the analogy can be kept on a short leash. We can state which relation is genuinely similar and which difference would make the analogy generate a wrong prediction.
My three tests for a metaphor
- What mechanism does this comparison help me see?
- Which engineering assumption does the natural system not share?
- What would I predict incorrectly if I took the comparison literally?
The third test is the most important. An analogy that cannot fail is decoration, not explanation.
Beyond the borrowed language
Evolutionary theory, linguistics and information theory each illuminated different aspects of language without reducing it to one mechanism.
Language lets humans externalize models of absent worlds: memories, plans, laws, mathematics and imaginary universes.
Did language merely improve communication, or did it create a new kind of shared reality?
A good metaphor should eventually make itself less necessary. It gets us close enough to the real system that we can see where the scaffolding ends.
Reading trail
These links are starting points for the scientific and historical ideas. The systems interpretation, analogies and conclusions here are my own.