Research shows that instruction geared to common learning characteristics can be more effective than instruction focused on individual differences.
Scientists and poets see the world differently. Scientists focus on predictability and order; they are therefore interested in how seemingly different entities are actually the same. Poets are more often interested in the individual, the unique. Carl Linnaeus looked at a butterfly and thought about ways that it was similar to other insects, even more similar to other butterflies, and interchangeable with butterflies of the same species. Robert Frost looked at a butterfly and saw something worthy of its own elegy.
Both perspectives have value, but they highlight a challenge for educators: How are we to think about individuality among students.