what is the definition of a public sphere? To me twitter is just another service from a private corporation that I can choose to use or not. Is it "public sphe

what is the definition of a public sphere? To me twitter is just another service from a private corporation that I can choose to use or not. Is it "public sphere" because they make everything searchable and readable from the public internet? What makes an account real on this platform? do you mean that the text is written by a human and not a bot?