I discuss the propositional knowledge of an omniscient being, knowledge of facts that can be represented by that-clauses in sentences such as ‘John knows that the world is round.’ I shall focus upon questions about a supposedly omniscient being who propositionally knows the truth about all current states of affairs. I shall argue that there is no such being.

This article seeks to understand sustainable tourism consumption through the lens of existentialism. Netnography of backpackers on an extended vacation reveals both existential anxiety and authenticity motivate and shape travel. This in turn has implications for the relative sustainability of otherwise of tourism consumed.