Lojban is a constructed language designed for clarity and precision in communication. It was created in the late 20th century, building on the earlier language Loglan, which aimed to test the Sapir-Whorf hypothesis about language influencing thought. Lojban's grammar is based on predicate logic, making it unique among languages. The language consists of a small set of phonemes and a flexible word order, allowing speakers to express complex ideas succinctly. Lojban is used by enthusiasts for various purposes, including linguistic research, artificial intelligence, and as a tool for exploring logical reasoning and communication.