Bart Streumer is a contemporary Dutch analytic philosopher specializing in metaethics and practical reason, currently based at the University of Groningen. He is best known for defending a radical error theory, arguing in his monograph 'Unbelievable Errors' (2017) that all normative judgments are false because irreducibly normative properties do not exist. His work addresses the nature of normativity, reasons for action, and the possibility of reductive naturalist accounts of moral properties.
Developed and defended a comprehensive error theory about all normative judgments in 'Unbelievable Errors' (Oxford University Press, 2017)
Argued that the error theory, though unbelievable, cannot be believed and is therefore self-undermining in a philosophically tractable way
Contributed influential work on the reducibility of normative properties to naturalistic properties
Advanced debates on the relationship between reasons, normativity, and consequentialist moral theories
Edited 'Reasons, Normativity, and Value' and contributed extensively to journals on practical reason and metaethics