The first point of discussion would be for Catholics who prior to Vatican II had attended Mass celebrated as in the first photo and then after Vatican II were introduced to the Mass as celebrated in the second photo. How would this affect them?
The second point of discussion is if someone who wasn't Catholic attended Mass as in the first photo and then the next Sunday Mass as in the second photo, what do you think there comments would be in terms of describing the two?
The third point of discussion would be about Catholic belief concerning the doctrines of the Mass in the liturgical formation of children. How would a child who only attended the Mass as portrayed in the first photo differ from a Catholic child who only attended Mass as portrayed in the second photo?