There’s a term for this kind of message: phatic expression. Ie. ‘Hello, is this thing on?’ https://en.wikipedia.org/wiki/Phatic_expression https://en.wikipedia

There’s a term for this kind of message: phatic expression. Ie. ‘Hello, is this thing on?’ https://en.wikipedia.org/wiki/Phatic_expression https://en.wikipedia.org/wiki/Phatic_expression