In codicalism, the relationship
epistemology (E) ↔ ontology (O) is mapped to
program (P: in some language L) ↔ computing substrate (Σ).
In instrumentalism: model (M) ↔ reality (R).
One could have a bunch of candidates.
P₁:L₁ ↔ Σ₁
P₂:L₂ ↔ Σ₂
(Here using latin letters for languages, greek for substrates.)
If they can’t be differentiated based on experimental data, then they are observationally equivalent.
Science vs. philosophy:
a codicalist (programming linguistic) perspective
Given two language (L) ↔ substrate (Σ) pairs
Lˢ ↔ Σˢ
Lᵖ ↔ Σᵖ
questions are posed in terms of differences between the Ls and the Σs.
Codicalism can be viewed as a yang-yin combo of computationalist epistemology and physicalist ontology.