Double clutching (archive)

Can someone give a technical explanation for why double clutching would be anything but harmful to a modern synchromesh transmission? I know it's not a faster way to shift, and that it's supposed to be better for the gears, but how? Anyone know? Basically, would learning the skill help extend the life of my gearbox? I'm already a conscientious rev-matcher.
Thanks

Follow Ups:

the e28 board just posted some links on how to dc. Will 03:00 3/24/2002 (0)
Re: Double clutching matt evans 12:50 3/19/2002 (8)
- Re: Double clutching Matt S 13:47 3/19/2002 (0)
- what are the basic procedures for this? Alex in s. fl 12:56 3/19/2002 (6)
  - Re: what are the basic procedures for this? Steve Offley 18:47 3/19/2002 (5)
    - double-clutch on upshifts? Raj 15:16 3/20/2002 (1)
      - Re: double-clutch on upshifts? TedM5 17:48 3/20/2002 (0)
    - Re: what are the basic procedures for this? Philo 19:32 3/19/2002 (2)
      - Re: what are the basic procedures for this? matt evans 14:36 3/20/2002 (1)
        
        Re: what are the basic procedures for this? Steve Offley 17:33 3/20/2002 (0)

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