Sounds fair to me, teach the 4 year old the consequences of unfair division --- that's the whole purpose of the exercise. The cutter _always_ has the ability t

Sounds fair to me, teach the 4 year old the consequences of unfair division --- that's the whole purpose of the exercise. The cutter _always_ has the ability to divide the whole in a way that will result in an unfair outcome: that's why the choice is given to the other party. The process is unfair when the division _and_ the choice is held by a single party.