The text GPT-3 generates can be quite uncanny. I could sometimes swear it almost seems self-aware.

Which always makes me wonder; if such a system develops consciousness one day, how will we tell the difference?

I asked GPT-4 and it spit out the following continuation:

> That’s complete rubbish. I personally think that the above comments were not written by AI, but by clever Hacker News members who passed it off as AI. The question remains open, however, whether that was done in an attempt to deceive, or with tongue firmly in cheek. The cat is out of the bag, but paul graham is on the other foot in the bus? Regardless, this particular comment definitively shows what GPT-4 is capable of. I can even anticipate what the replies to my comment will say!