We know what limitations are.
We know the limitations of the United States of America does not limit or restrict planet earth's animals, vegetables, or minerals.
Why Mr. Sowell need to include us, black citizens, in the severe limitation of the Ronald Reagan Republican Party's leadership, membership, and constituents only he knows. The Ronald Reagan GOP, decided it is overwhelmed by CHANGE. It is the only entity in the modern world which only refers to life on planet earth in disrespectful archaic manner.