What is the definition of an invented language?
All languages are in some sense invented in that people create them, but generally people do this as a group without being conscious of what they are doing. The invented languages I’m talking about are those where someone sat down and built a brand-new language from scratch. What compels an individual to create a new language? For most of history it’s been dissatisfaction with natural languages. They see problems like irregular verbs or words that aren’t specific enough in terms of what they mean, and decide that they could do better.