Isn't vibratory screwing the kind that makes you go blind?

--
Christopher A. Young
Learn more about Jesus
www.lds.org
..


wrote in message
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The Chinese do not need vibratory screwing. They seem to be
doing
pretty well with their regular screwing. There are already
over one
billion of them. Improving the efficiency of their screwing
might lead
to too much screwing and a resultant population boom.
Dave