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Red was also a badge of rank. During the Song dynasty (9061279), officials of the top three ranks wore purple clothes; those of the fourth and fifth wore bright red; those of the sixth and seventh wore green; and the eighth and ninth wore blue. Red was the color worn by the royal guards of honor, and the color of the carriages of the imperial family. When the imperial family traveled, their servants and accompanying officials carried red and purple umbrellas. Of an official who had talent and ambition, it was said "he is so red he becomes purple."

What ranks in the Song dynasty wore blue?
Answer: eighth and ninth
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France's highest courts are located in Paris. The Court of Cassation, the highest court in the judicial order, which reviews criminal and civil cases, is located in the Palais de Justice on the Ile de la Cite, while the Conseil d'Etat, which provides legal advice to the executive and acts as the highest court in the administrative order, judging litigation against public bodies, is located in the Palais-Royal in the 1st arrondissement. The Constitutional Council, an advisory body with ultimate authority on the constitutionality of laws and government decrees, also meets in the Montpensier wing of the Palais Royal.

Where does the Constitutional Council meet?
Answer: Montpensier wing of the Palais Royal
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The theoretical difficulties arise from the fact that all of the methods except the X-ray crystal density method rely on the theoretical basis of the Josephson effect and the quantum Hall effect. If these theories are slightly inaccurate though there is no evidence at present to suggest they are the methods would not give accurate values for the Planck constant. More importantly, the values of the Planck constant obtained in this way cannot be used as tests of the theories without falling into a circular argument. Fortunately, there are other statistical ways of testing the theories, and the theories have yet to be refuted.

Using Planck constant values from these effects would lead to what logical issue?
Answer:
a circular argument