Incidental Contact: The mere fact that contact occurs does not mean a foul has been committed. Players are allowed to contact other players when reaching for a loose ball, or when performing normal offensive and defensive movements. The hand is considered “ part of the ball” when it is in contact with the ball and contact with a players hand when it is in contact with the ball is not a foul.

這段的重點是 Incidental 和 normal.

incidental: 非蓄意, 無可避免, 會發生的. normal : 正常.