Why is the sky dark at night? This talk will explore the differing roles of puzzles and paradoxes in science and in mathematics.

Thought experiments like Maxwell's Demon or the EPR Paradox have been used to illustrate or question new ideas in physics; the Olbers Paradox has challenged our understanding of the universe while mathematical paradoxes can entertain or perplex.

A variety of examples will be demonstrated and discussed, and we will see water fall upwards!

Lecture by: Tony Mann(University of Greenwich)

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