Community group, Philosophy in Pubs, takes over the galleries for the night to explore the difference and relationship between gender and sex. Are the concepts of 'male' and 'female' well-defined and do their meanings differ in different circumstances? What is the relationship between our biology, our state of mind and our identity? How do we know whether we are male or female? Can I simply choose my gender or is there some other criterion I should fulfil? Come along, grab a drink and join the discussion.