PZ Myers. 2005 Dec 02. Chirality matters. <http://pharyngula.org/index/weblog/chirality_matters/>. Accessed 2008 Dec 04.

Posted on M00o93H7pQ09L8X1t49cHY01Z5j4TT91fGfr on Friday, December 02, 2005

Chirality matters

An anatomy lesson:

Thus screwing is easier for righties. Unscrewing is easier for lefties.

Posted by PZ Myers on 12/02 at 04:12 PM
Science • 0 TrackbacksOther weblogsPermalink
  1. But, PZ, if it's easier for righties, why are they against everybody else doing it?

    Of course, that would explain how Bob Guccione was able to promise to make public a whole list of Bob Livingstons a decade ago.
    #: Posted by SocraticGadfly  on  12/02  at  04:24 PM
  2. I think he's inferring that righties are better at screwing you, and lefties are better at fixing things.

    Although my mind did initially go to the sex thing, which is not altogether surprising.
    #: Posted by The Chemist  on  12/02  at  04:52 PM
  3. Actually, I did initially go to the biomechanical answer,,, then realize PZ probably meant a "political" lesson.
    #: Posted by madbard  on  12/02  at  05:58 PM
  4. Well, leaving aside political potshots for the moment, this would explain why, when I unscrew a lid off a jar, I usually turn the jar instead of the lid.
    #: Posted by  on  12/02  at  07:10 PM
  5. I. Am. So. Dense!

    I got the sex allusion.
    I loved the biomechanical explanation.
    I never thought of this being a political metaphor, too!
    And I am steeped in Left/Right metaphors....
    #: Posted by coturnix  on  12/02  at  08:14 PM
  6. Being a leftie, I use my right hand for screwing things in and my left for unscrewing them. Guess it all makes sense now...
    #: Posted by donna  on  12/02  at  08:58 PM
  7. um,
    screwing in right-handed screws is easier for righties. screwing in left-handed screws is easier for lefties.
    #: Posted by  on  12/02  at  09:10 PM
  8. I'm somewhat ambidexterous; I can screw in or out either handedway (oh that sounds so sexy now I see it in preview!).
    #: Posted by  on  12/02  at  10:36 PM
  9. Several points:

    1. My original post got in the sex AND the political angles both! I knew just what I was saying, so I didn't even thinking about righties screwing us out of anything. I just took a different political lesson than PZ may have meant.

    2. Frumious, since we righties are a vast majority, that's why left-handed screws are few and far between.

    3. Buffalo Gal -- with a line like that, it's a good way to get all sorts of off the wall e-mail.
    #: Posted by SocraticGadfly  on  12/02  at  10:46 PM
  10. I got the mechanical angle and to some degree the sex angle, but not the political angle. Though I did want to make a joke about UTI being populated with lefties, still in the mindset wherein a leftie is a left-handed person but not a leftist.
    #: Posted by Alon Levy  on  12/03  at  04:01 AM
  11. "this would explain why, when I unscrew a lid off a jar, I usually turn the jar instead of the lid"

    Yes; but it is a good tactic for any handedness if the jar or bottle is not too big, to avoid high stress on weak joints.

    (Insert obvious joke about using hands too much when screwing here.)
    #: Posted by  on  12/03  at  11:47 AM
  12. Cripes, and here's dull ol' me thinking it was about chirality...

    UTI being populated with lefties

    You have a urinary tract infection? I'm sorry, that's a hassle. But why blame it on any particular bug; have you had it cultured?

    Ron, still contemplating left-handed screws
    #: Posted by Ron Sullivan  on  12/03  at  11:48 AM
  13. Bah. You people are not political enough. My first thought was lightbulbs, followed by, "He he! That could be a funny joke on how they act in politics."
    #: Posted by Kagehi  on  12/03  at  12:33 PM
  14. Umm, I am pretty sure that they are not using lightbulbs in politics. It seems more like dimwits.

    Which remind me of a (probably very old) joke I heard yesterday on swedish television as an answer to the question which popular US serial depicts the president and his staff:

    "Lost."

    I wasn't the only one that saw humour in that answer...
    #: Posted by  on  12/03  at  01:40 PM
  15. Thanks for the comments (and the traffic!). As the author of the post, I'll add a small historic footnote. It originally had a more explicit polital tag to go with the obvious sexual one:

    What's the moral of this? The right is good at screwing you, the left is better at getting you unscrewed.


    I changed it to make it less "heavy handed" (sorry).
    #: Posted by revere  on  12/03  at  03:33 PM
  16. errrm...

    the consensus that screws should turn the way they do occured because the majority of us are right-handed...

    and...

    the polarity of the left/right (false) political dichotomy is entirely arbitrary...

    have a chuckle but ... screwing has no chirality (last time i checked, it was purely harmonic)...
    #: Posted by  on  12/04  at  07:31 AM
  17. djlactin: but what about getting screwed . . .
    #: Posted by revere  on  12/04  at  09:05 AM
  18. That has no chirality, either, as far as I know.
    #: Posted by Alon Levy  on  12/05  at  02:44 AM