heh, yeah that's true for sure. his method of sitting the hoses in the jar of fluid is NOT one of the methods of getting air out of a system.
the "gravity" method of flushing fluid from a MB system can succeed, but it will not get air out of the brake lines without luck. air wants to rise against the flow of liquid. and the bleeder does not flow enough fluid with only gravity to push against it to keep the air from rising. it will flow enough for changing flex lines, or changing calipers, but it's not a sure thing, and air can get into the steel lines with only gravity.
I have successfully bled the calipers, and flex lines with just gravity. but not on a car with ABS for sure.

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!