Finite symmetry groups such as the Mathieu groups are used in coding theory, which is in turn applied in error correction of transmitted data, and in CD players. Another application is differential Galois theory, which characterizes functions having antiderivatives of a prescribed form, giving group-theoretic criteria for when solutions of certain differential equations are well-behaved.u[›] Geometric properties that remain stable under group actions are investigated in (geometric) invariant theory.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Geometric Invariant theory studies what kind of equations?
Ah, so.. unanswerable

Many of Yale's buildings were constructed in the Collegiate Gothic architecture style from 1917 to 1931, financed largely by Edward S. Harkness Stone sculpture built into the walls of the buildings portray contemporary college personalities such as a writer, an athlete, a tea-drinking socialite, and a student who has fallen asleep while reading. Similarly, the decorative friezes on the buildings depict contemporary scenes such as policemen chasing a robber and arresting a prostitute (on the wall of the Law School), or a student relaxing with a mug of beer and a cigarette. The architect, James Gamble Rogers, faux-aged these buildings by splashing the walls with acid, deliberately breaking their leaded glass windows and repairing them in the style of the Middle Ages, and creating niches for decorative statuary but leaving them empty to simulate loss or theft over the ages. In fact, the buildings merely simulate Middle Ages architecture, for though they appear to be constructed of solid stone blocks in the authentic manner, most actually have steel framing as was commonly used in 1930. One exception is Harkness Tower, 216 feet (66 m) tall, which was originally a free-standing stone structure. It was reinforced in 1964 to allow the installation of the Yale Memorial Carillon.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Who financed a large chunk of the architecture from 1817 to 1931
Ah, so.. unanswerable

Gradually, the predetermined nature of professional wrestling became an open secret, as prominent figures in the wrestling business (including WWE owner Vince McMahon) began to publicly admit that wrestling was entertainment, not competition. This public reveal has garnered mixed reactions from the wrestling community, as some feel that exposure ruins the experience to the spectators as does exposure in illusionism. Despite the public admission of the theatrical nature of professional wrestling, many U.S. states still regulate professional wrestling as they do other professional competitive sports. For example, New York State still regulates "professional wrestling" through the New York State Athletic Commission (SAC).
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): How have people reacted to the revelation that wrestling is purely entertainment?
Ah, so..
This public reveal has garnered mixed reactions from the wrestling community