James Marshall's work on Foucault exemplifies a break with tradition in philosophy of education and if taken appropriately as a new methodology, a new logic, portends a different future for the field. This article begins from a misunderstanding of Marshall. It then posits Marshall as situated in a particular Foucauldian root: a logic break out of Bachelard, Canguilhem and Foucault. From them a different understanding of "concept" is offered as a break with the analytic tradition in philosophy and philosophy of education.