Mark is a philosopher and logician, whose work explores the nature of truth, knowledge, and reality. He is a Professor of Philosophy at the University of Nottingham, where he researches and teaches metaphysics, formal logic, the philosophy of language, epistemology, and the philosophy of mind.
Mark is the author of several influential books, including What Truth Is, Impossible Worlds, and Reality Making.
In addition to his academic work, Mark runs a popular YouTube channel, Attic Philosophy. His videos cover everything from modal logic and paradoxes to social philosophy, making University-level philosophical discussion accessible to a broader audience without sacrificing depth.
Logic, Proof, and Understanding
Are logic and mathematics human inventions, or something we’ve discovered? Philosophers have debated the issue for centuries, with no definitive answer. We’ll take a different approach, by investigating simple axiom systems and ask, how typical are they in the space of possible systems? Are they the ones we’d expect to discover in nature?
To investigate these questions, we’ll ask: What is logic? How can we develop new axiom systems, and what’s their point? We’ll use computational techniques to investigate as a group how different systems work. Some of these computational proofs grow very large. We’ll reflect on this and ask, does it matter if we can’t understand what the proofs are telling us?
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