Instrumental rationality (or practical rationality) is concerned with what to do, while epistemic rationality (or theoretical rationality) is concerned with what to believe.
LessWrong (2021) Instrumental vs Epistemic Rationalityepistemic rationality, in 'Rationality', LessWrong Wiki.
Instrumental vs Epistemic Rationality, LessWrong.
rationality
Instrumental rationality (or practical rationality) is concerned with what to do, while epistemic rationality (or theoretical rationality) is concerned with what to believe.