What's really interesting to me is how easy it is to talk to it conversationally and get an appropriate response. Inspired by this post, for instance, I just now tried asking it to explain the joke: "Two men walk into a bar, the third man ducks." It's initial response was nonsense:
> The joke is funny because it relies on a play on words and a surprise ending. The first two lines set up the expectation that something is going to happen to the two men who are walking into the bar, but the punchline subverts that expectation by introducing a third man who ducks, which is a unexpected and humorous twist.
I asked what wordplay was involved, and it told me this:
> The word play in the joke involves the use of the word "walk" in the first two lines and the word "duck" in the punchline. In the first two lines, "walk" is used in the literal sense, as in moving forward on foot. However, in the punchline, "duck" is used in the sense of avoiding or evading something, rather than its literal meaning of a type of bird. This sudden shift in the meaning of the word "duck" is what creates the surprise and humor in the joke.
More nonsense. But then I told it "It's actually the word "bar" that's being used in the wordplay. The word "duck" there just means evading something" and asked it to explain the joke again, and it returned this:
> In the first two lines of the joke, "walk into a bar" is used in the literal sense, as in two men entering a place where drinks are served. However, in the punchline, "bar" is used in the sense of a barrier or obstacle, rather than its literal meaning of a type of establishment. The punchline introduces a third man who "ducks" under the perceived obstacle, which is a unexpected and humorous twist. The joke also relies on the idea that walking into a bar is a common and mundane activity, so the unexpected ending adds a element of absurdity to the joke.
Though the initial response was nonsense, talking to it as if it were a human and giving it a limited hint (telling it the wordplay involved "bar" and not "duck") was enough for it to give the correct answer.
I think this is probably why so many people say they're underwhelmed. A lot of the initial responses to simplistic questions aren't so interesting. But the degree to which it is able to correctly adapt and respond to conversational input is fairly astounding.