[samuel]

I had never expected that I would witness in my lifetime such advanced AI, and now (may be) extraterrestrial life.

If confirmed, the only remaining big mystery would beto know if there is intelligent life in any other part of the universe, which I understand is orders of magnitude more unlikely to confirm, but one can dream...

[booleandilemma]

I think the other big mystery is why does the universe exist at all.

[i_love_retros]

I think we are more likely to find extraterrestrial life than create proper AI and not just text summarizers/predictors

[dmead]

Neither of those things have actually happened. This is pure, what's the word. Cope?

[samuel]

One of these obviously hasn't happened, but it might be, hence my excitement. I don't know how likely the experts think it is (~1%, ~10%,etc...) but I guess the odds aren't high.

With regards to the other one (AI), I did not claim anything else than a subjective assesment. I did not expect to see an AI capable of mantaining a conversation aloud, for example. May be I'm easy to impress.