public void Activate()
    {
        ChoicePair c = choiceEngine.GetNextChoicePair();

        SpawnACube(c.goodChoice, goodLabel);
        SpawnACube(c.badChoice, badLabel);
    }
    public ChoicePair GetNextChoicePair()
    {
        if (choices.Count == 0)
        {
            Debug.LogError("FATAL: Choice list is empty. No more choices.");
        }

        ChoicePair c = choices[0];

        choices.RemoveAt(0);
        return(c);
    }