Miguel López ASTORGA ABSTRACT: There is a debate over the acceptance or rejection of the conjunction thesis. That debate is linked to the concept of truthmaker. The aim of this paper is not to enter that discussion or try to clarify the concept of truthmaker. The goal is just to address the thesis from Non-Axiomatic Logic. I will attempt to …

Miguel LÓPEZ ASTORGA ABSTRACT: Lukowski argued that four typical examples of inferences used to show that human beings’ natural reasoning is nonmonotonic do not reveal that. Lukowski’s analyses support the idea that those inferences are actually monotonic deductions. My aim here is to check whether a particular non-axiomatic logic is consistent with the habitual conclusions people draw in those kinds …