As Carter says, some of the answers are intriguing, many are banal, and others just plain absurd. Here are some samples:
We would have thought that the answer to the question would have been "almost everything that we believe" since very little in life can really be proved, but then we're not intellectuals and we lack the wit to say things like "time does not exist" or that "nothing is true if it cannot be proved." With regard to this last, one of the comments to the post at EO pointed out that:
And Joe Carter reflects upon Daniel Dennett's contribution which says in part that "I believe, but cannot yet prove, that acquiring a human language (an oral or sign language) is a necessary precondition for consciousness". Carter asks whether Dennett would tell Helen Keller that she wasn't conscious until she had learned a language.
What makes reading the pontifications of intellectuals so much fun is that they are often so unconsciously loopy.