I believe Theatre can be many different things, it can be as simple as just having a performer and audience, or as complex as having an stage, lighting, costumes, music etc. I think theatre is something thats open to discussion, and ulitmately doesn't have a particular definition, it will always be based on interpretation and opinion.
To me theatre comes from the audience, I think audience is the source of theatre, and I think theatre is built around it. You could have one audience member, and one person speaking and that could be interpreted as a piece of theatre. I don't believe location has much to do with theatre, I think theatre can happen in any space, I think all the things associated with theatre nowadays such as like an actual stage, costumes, proffesional actors, are all additions to make theatre enjoyable. In terms of invisible theatre, It supports my point that as long as there is an audience theatre exist, if you don't have an audience there would be no point is theatre.
