Complex sentence: The non-commutativity of Lorentz boosts is another unintuitive feature of special relativity which is unlike Galilean relativity; in Newtonian mechanics any pair of Galilean boosts can be performed in either order and the result is the same Galilean transformation.
Split into simpler sentences: The non-commutativity of Lorentz boosts is another unintuitive feature of special relativity that is unlike Galilean relativity. In Newtonian mechanics any pair of Galilean boosts can be performed in either order, and the result is the same Galilean transformation.