[LAU] digital voodoo: master fader should be set at 0db

Hi I'm thinking harder and harder about my mixes and have been reading this (written for renoise, but should apply to every DAW, so any ardour users/devs, please speak up!): http://www.renoise.com/indepth/tutorials/avoid-clipping-in-your-final-mix/ I didn't get why it should be better to have the master fader fixed at 0db. Well a tiny bit better, but still, supposed I have 30+ tracks, each having (at least) a fader, does it really matter that much to have another fader in there? I mean the alternative would be to pull *every* channel fader down by say 1.5db if the track is clipping with 1.5db. In such case I just reach for the master fader and pull it 1.5db, problem solved. I raised my doubts on the renoise forum (http://www.renoise.com/board/index.php?showtopic=24975), and I still don't get it, really sounds like either voodoo or peanuts to me. Could all you clever and sensible people with good ears and technical knowledge please enlighten me :-) Would it really make a difference to keep the master fader fixed at 0db? Looking forward to a second opinion on this very baffling issue! -- Atte http://atte.dk http://modlys.dk