Why is Water Wet, Daddy?

Danny Finkelstein in The Times:

LET no one say that working in politics leaves you without useful skills when you leave it.
At the weekend my five-year-old son looked at me earnestly and said: “Daddy, why is water wet?”
Now I’ve since put this question to all manner of scientists and
moral philosophers and, I have to say, their answers wouldn’t have
helped.
Fortunately, I was able to draw on years of political experience. I avoided the question.
Well, what would you have said?

There’s a lovely story floating around out there and I’m sorry that I cannot provide the attribution. (It might turn up in the Richard Feynman memoirs, not sure.)

A theoretical physicist, who’s father was also such, is talking  to a friend about boyhood memories. He tells of asking his father, when he was five, just why water was wet. He remembers the answer perfectly, and a very long answer it was as well.  It’s just that he was 30, with his own PhD in theoretical physics, before he actually understood it.

6 responses

  1. I had a theoretical physics tutor who used to ask disarmingly simple questions like that. We could never answer them…

  2. Water is wet – coefficient of friction thing? It’s not surface tension again, is it? 🙂

  3. In “The Cuckoo’s Egg”, Cliff Stoll digresses from his tale of trapping a computer hacker into relating the sub-tale of his defense of his disertation in astronomical physics. The penutimate question, asked once: “Why is the sky blue?” Followed by the ultimate question, asked recursively: “Could you be more specific?”
    IIRC, another two hours and several blackboards full of esoteric equations describing the frequency-dependent quauntum probabilities photons diffracting in their paths during interactions with nitrogen, oxygen, and associated other molecules. Stoll finally satisfied his questioners that the sky was blue for a good reason.

  4. Apparently, “Water isn’t wet. Wetness is a description of our experience of water”, which is precisely the sort of answer I would have expected from a Grauniad reader, but it seems to be as good as we’re likely to get. “Wet” is a description of the property of water, so water is obviously wet.

  5. everyone who thinks water isn’t wet is a total douchebag.

  6. Idunno Avatar
    Idunno

    Think outside the icebox, folks. You’re making as assumption that we’re talking about liquid water…but ice, a solid, isn’t “wet.” Where does that leave us?

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