Compared to standards of efficiency or intention social interaction en
tails incessant error followed by error-correction. Most order in soci
al structures and processes therefore results not from rational action
but from constraints on the correction of errors. Analytically bur no
t concretely we can separate those constraints into culture (historica
lly accumulated shared understandings and their representations) and p
reviously established social relations. Counterfactual accounts, which
are crucial to social explanation, acquire their validity from the ac
curate mapping and explanation of changes in culture and social relati
ons, including their impact on error-correction.