[Thought Experiments of Economic Surplus: Science and Economy in Ernst Mach's Epistemology].

Thought Experiments of Economic Surplus: Science and Economy in Ernst Mach's Epistemology. Thought experiments are an important element in Ernst Mach's epistemology: They facilitate amplifying our knowledge by experimenting with thoughts; they thus exceed the empirical experience and suspend the quest for immediate utility. In an economical perspective, Mach suggested that thought experiments depended on the production of an economic surplus based on the division of labor relieving the struggle for survival of the individual.

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Using the Instant for the Projects of Science. Focusing on Bachelard's books L'Intuition de l'instant (1932) and La dialectique de la durée (1936), the paper deals with Bachelard's discontinuous and serial concept of time that is formulated against Henri Bergson's concept of duration. With a view to the philosophical concept of monadology, to the theory of relativity, and to the contemporary psychological and neurological research, the paper points to the significance of the instant for Bachelard's concept of temporality, for his desubjectified concept of the individual as well as his discontinuous concept of matter.