I’m not arguing one way or the other, but how does a window teach history? If we’re comparing it to statues what do they teach? What do they symbolize? Are we

I’m not arguing one way or the other, but how does a window teach history? If we’re comparing it to statues what do they teach? What do they symbolize? Are we required to keep them forever? Under what circumstances is it acceptable to change, replace or remove them?