To me, DRY, like Single Responsibility, is practical to a point, after which it doesn't support its weight. It strikes me as being similar to normalization in r

To me, DRY, like Single Responsibility, is practical to a point, after which it doesn't support its weight. It strikes me as being similar to normalization in relational databases and summed up by "Normalize till it hurts, denormalize till it works".