The "witch" only pretends to lift on the 1st attempt, which causes the mass to unbalance towards one person, making it very difficult to lift as they get over 1/2 the mass. On the 2nd attempt, the "witch" lifts evenly, so they all carry just 1/4 of the mass.
The "witch" only pretends to lift on the 1st attempt, which causes the mass to unbalance towards one person, making it very difficult to lift as they get over 1/2 the mass. On the 2nd attempt, the "witch" lifts evenly, so they all carry just 1/4 of the mass.