On such short samples: all three have been written by humans—or at least comments materially identical have been.
The third has also been written by many a bot for at least fifteen years.
On such short samples: all three have been written by humans—or at least comments materially identical have been.
The third has also been written by many a bot for at least fifteen years.
If you're willing to say that a fifteen year old bot was "writing" then I think having a discussion on if current "bots" pass the Turing test is sort of moot