Well depending on the content of the text (math,science,art,etc...) it usually affects our understanding in terms of acknowledging the fact that we have since "upgraded". We have advanced in art, science, technology, and writing even! This also affects its theme in that, if they speak of architecture then we are aware that is the Middle Ages. So this means buildings and surroundings have old styles and design. Also it makes us aware of the fact that the way they are speaking is due to it being 17th century. Hope this helps!
