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Claude Shannon and his juggling robot

Couldn’t resist this, although it’s purely link propagation. If you don’t know who Claude Shannon is, this might not be so exciting. But the excellent blog collision detection has a post on juggling as a physical Turing test, which links to a wonderful short piece of video showing Shannon first juggling, then demonstrating his own juggling robot, “W.C. Fields”. As a juggler and computer scientist myself, it’s wonderful to see that one of the greats has devoted so much attention to the art.

Actually, following the link trail a bit further I found Arthur Lewbel’s obituary for Shannon (the source of the movie), with many juggling references and the following statement of Shannon’s “Juggling Theorem”:

(F+D)H=(V+D)N, where F is the time a ball spends in the air, D is the time a ball spends in a hand, V is the time a hand is vacant, N is the number of balls juggled, and H is the number of hands.

Which just goes to show, no matter how anchored in the real world a mathematician might seem to be, the lure of generalisation just can’t be ignored. Number of hands?!?

13 Comments

  1. erik wrote:

    So this physical turing test, shall it be a normal cascade or more something like a Mills Mess? I know it took me some time to learn ;-)

    Wednesday, June 8, 2005 at 10:08 am | Permalink
  2. tikitu wrote:

    Someone tried to explain Mill’s Mess to me years ago, but I never got it figured out… didn’t help that she couldn’t remember it herself, and was perhaps stoned at the time ;-) Great juggling site, btw, I’ll be stopping by again.

    Wednesday, June 8, 2005 at 12:03 pm | Permalink
  3. erik wrote:

    well, if it doesn’t work for you through this site i’ll be happy to teach you (if afterwards we go for a drumming session ;-))

    Btw, you really need an overview of recent comments somewhere (look 4 a wordpress plugin).

    Thursday, June 9, 2005 at 6:24 pm | Permalink
  4. tikitu wrote:

    Save the drumming for my new place, comes with drum and (more-or-less) no noise restrictions!

    Thursday, June 9, 2005 at 7:19 pm | Permalink
  5. tikitu wrote:

    Comments are now summarised on a page of their own. (I like the slimline sidebar, myself.)

    Thursday, June 9, 2005 at 7:20 pm | Permalink
  6. erik wrote:

    no noise restrictions? In Amsterdam? Heb je ergens een bunker gevonden? Bedankt voor de comments page ;-) Maar euhm, ‘Eat your heart out’? Babelfish vertaalt het als ‘Eet uit uw hart’, maar dan weet ik al helemaal niet wat je bedoelt.

    Friday, June 10, 2005 at 10:12 am | Permalink
  7. tikitu wrote:

    hehe, wacht tot je het ziet, man, echt geweldig :-) alleen maar “bijna geen geluids-restricties”, trouwens

    Friday, June 10, 2005 at 1:57 pm | Permalink
  8. tikitu wrote:

    “Eat your heart out”: euhm, “ga je gang en veel plezier”? Eigenelijk is het wel een beetje raar ook in het engels, had nooit over het nagedacht…

    Friday, June 10, 2005 at 1:58 pm | Permalink
  9. erik wrote:

    i found an appropriate dutch translation: “lucht je hart”. As in: share all your feelings …

    Friday, June 10, 2005 at 3:07 pm | Permalink
  10. tikitu wrote:

    That’s absolutely not what “Eat your heart out” means (“share your feelings”). It’s more like, “Eat until your heart pops from cholesterol overload.”

    Friday, June 10, 2005 at 3:48 pm | Permalink
  11. tikitu wrote:

    Btw, I haven’t nailed Mill’s Mess yet, but it’s gently tacked down.

    Friday, June 10, 2005 at 3:49 pm | Permalink
  12. erik wrote:

    have a look at this drumming video (mpeg)

    Sunday, June 12, 2005 at 12:17 pm | Permalink
  13. tikitu wrote:

    um, holy shit! way cool man, should politely suggest to the centraal station buskers that they take some pointers :-)

    Monday, June 13, 2005 at 11:17 am | Permalink