  After a brief presentation of Feynman diagrams, we criticizise the idea that
Feynman diagrams can be considered to be pictures or depictions of actual
physical processes. We then show that the best interpretation of the role they
play in quantum field theory and quantum electrodynamics is captured by Hughes'
Denotation, Deduction and Interpretation theory of models (DDI), where models
are to be interpreted as inferential, non-representational devices constructed
in given social contexts by the community of physicists.
