Problem: Financial crisis of 2007%E2%80%9308:

For a variety of reasons, market participants did not accurately measure the risk inherent with financial innovation such as MBS and CDOs or understand its impact on the overall stability of the financial system. For example, the pricing model for CDOs clearly did not reflect the level of risk they introduced into the system. Banks estimated that $450bn of CDO were sold between "late 2005 to the middle of 2007"; among the $102bn of those that had been liquidated, JPMorgan estimated that the average recovery rate for "high quality" CDOs was approximately 32 cents on the dollar, while the recovery rate for mezzanine CDO was approximately five cents for every dollar.

What did market participants fail to measure accurately?
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A: risk inherent with financial innovation


Problem: Appalachian Mountains:

In Pennsylvania, there are over sixty summits that rise over 2,500 ft (800 m); the summits of Mount Davis and Blue Knob rise over 3,000 ft (900 m). In Maryland, Eagle Rock and Dans Mountain are conspicuous points reaching 3,162 ft (964 m) and 2,882 ft (878 m) respectively. On the same side of the Great Valley, south of the Potomac, are the Pinnacle 3,007 feet (917 m) and Pidgeon Roost 3,400 ft (1,000 m). In West Virginia, more than 150 peaks rise above 4,000 ft (1,200 m), including Spruce Knob 4,863 ft (1,482 m), the highest point in the Allegheny Mountains. A number of other points in the state rise above 4,800 ft (1,500 m). Snowshoe Mountain at Thorny Flat 4,848 ft (1,478 m) and Bald Knob 4,842 ft (1,476 m) are among the more notable peaks in West Virginia.

How many peaks are over 3000ft in West Virginia?
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A: unanswerable


Problem: Macintosh:

Mac OS continued to evolve up to version 9.2.2, including retrofits such as the addition of a nanokernel and support for Multiprocessing Services 2.0 in Mac OS 8.6, though its dated architecture made replacement necessary. Initially developed in the Pascal programming language, it was substantially rewritten in C++ for System 7. From its beginnings on an 8 MHz machine with 128 KB of RAM, it had grown to support Apple's latest 1 GHz G4-equipped Macs. Since its architecture was laid down, features that were already common on Apple's competition, like preemptive multitasking and protected memory, had become feasible on the kind of hardware Apple manufactured. As such, Apple introduced Mac OS X, a fully overhauled Unix-based successor to Mac OS 9. OS X uses Darwin, XNU, and Mach as foundations, and is based on NeXTSTEP. It was released to the public in September 2000, as the Mac OS X Public Beta, featuring a revamped user interface called "Aqua". At US$29.99, it allowed adventurous Mac users to sample Apple's new operating system and provide feedback for the actual release. The initial version of Mac OS X, 10.0 "Cheetah", was released on March 24, 2001. Older Mac OS applications could still run under early Mac OS X versions, using an environment called "Classic". Subsequent releases of Mac OS X included 10.1 "Puma" (2001), 10.2 "Jaguar" (2002), 10.3 "Panther" (2003) and 10.4 "Tiger" (2005).

What was the fuly overhauled successor to Mac OS 9?
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A: Mac OS X


Problem: Greeks:

In the Hesiodic Catalogue of Women, Graecus is presented as the son of Zeus and Pandora II, sister of Hellen the patriarch of Hellenes. Hellen was the son of Deucalion who ruled around Phthia in central Greece. The Parian Chronicle mentions that when Deucalion became king of Phthia, the previously called Graikoi were named Hellenes. Aristotle notes that the Hellenes were related with Grai/Greeks (Meteorologica I.xiv) a native name of a Dorian tribe in Epirus which was used by the Illyrians. He also claims that the great deluge must have occurred in the region around Dodona, where the Selloi dwelt. However, according to the Greek tradition it is more possible that the homeland of the Greeks was originally in central Greece. A modern theory derives the name Greek (Latin Graeci) from Graikos, "inhabitant of Graia/Graea," a town on the coast of Boeotia. Greek colonists from Graia helped to found Cumae (900 BC) in Italy, where they were called Graeces. When the Romans encountered them they used this name for the colonists and then for all Greeks (Graeci.) The word γραῖα graia "old woman" comes from the PIE root *ǵerh2-/*ǵreh2-, "to grow old" via Proto-Greek *gera-/grau-iu; the same root later gave γέρας geras (/keras/), "gift of honour" in Mycenean Greek. The Germanic languages borrowed the word Greeks with an initial "k" sound which probably was their initial sound closest to the Latin "g" at the time (Goth. Kreks). The area out of ancient Attica including Boeotia was called Graïke and is connected with the older deluge of Ogyges, the mythological ruler of Boeotia. The region was originally occupied by the Minyans who were autochthonous or Proto-Greek speaking people. In ancient Greek the name Ogygios came to mean "from earliest days".

Where do modern theorist believe the name of Greek originated from ?
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A:
A modern theory derives the name Greek (Latin Graeci) from Graikos, "inhabitant of Graia/Graea," a town on the coast of Boeotia.