Question: Adam Mitchel Lambert (born January 29, 1982) is an American singer, songwriter and stage actor. Since 2009, he has sold over 3 million albums and 5 million singles worldwide. Lambert rose to fame in 2009 after finishing as runner-up on the eighth season of American Idol. Later that year, he released his debut album, For Your Entertainment, which debuted at number three on the U.S. Billboard 200.

Critics, celebrities and colleagues have been outspoken in their praise for Lambert's vocal command. Kathie Bretches-Urban, co-founder of Metropolitan Educational Theatre Network (now MET2) where Lambert performed as a youth, said "He has invested his entire life in music and performing ... He'd just come out onstage, and it popped". Record producer Rob Cavallo once described Lambert as having an unlimited range, and able to sing every note on a guitar from the lowest to the highest. In a March 2012 interview, rock artist Meat Loaf rated Lambert's voice in the company of only two others, Whitney Houston and Aretha Franklin, based on "that jet pack quality to their voice that just lets it take off." Lambert's total recorded vocal range spans from bass E to B flat above tenor high C (E2 - B5), giving him three octaves and six semitones.  In 2011, when he took the stage at the MTV Europe Music Awards, honoree Queen guitarist Brian May noted that Lambert's voice has "sensitivity, depth, maturity, and awesome range and power which will make jaws drop"; while Roger Taylor added that Lambert had "the best range I've ever heard" in a BBC interview in 2012. Pharrell Williams, after collaborating with Lambert on his Trespassing album, commented, "This kid has a voice like a siren - there's no guys singing in that Steve Winwood-Peter Cetera range."  In October 2012, British tabloid the Sunday Mirror reported that Lambert had insured his voice for $48 million. A source told the newspaper: "Insurance for stars is a big deal in the US and Adam's voice is his bacon."

Using a quote from the above article, answer the following question: Have things have celebrities said about his singing?
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Answer: Queen guitarist Brian May noted that Lambert's voice has "sensitivity, depth, maturity, and awesome range


Question: Irving Fisher (February 27, 1867 - April 29, 1947) was an American economist, statistician, inventor, and Progressive social campaigner. He was one of the earliest American neoclassical economists, though his later work on debt deflation has been embraced by the Post-Keynesian school. Joseph Schumpeter described him as "the greatest economist the United States has ever produced", an assessment later repeated by James Tobin and Milton Friedman. Fisher made important contributions to utility theory and general equilibrium.

James Tobin argued that the intellectual breakthroughs that marked the neoclassical revolution in economics occurred in Europe around 1870. The next two decades witnessed lively debates, which led to the new theory being more or less incorporated into the classical tradition that preceded it. In the 1890s, according to Joseph A. Schumpeter there emerged  A large expanse of common ground and ... a feeling of repose, both of which created, in the superficial observer, an impression of finality - the finality of a Greek temple that spreads its perfect lines against a cloudless sky. Of course, Tobin argues, the temple was by no means complete. Its building and decoration continue to this day, even while its faithful throngs worship within. American economists were not present at the creation. To a considerable extent they built their own edifice independently, designing some new architecture in the process. They participated actively in the international controversies and syntheses of the period 1870-1914. At least two Americans were prominent builders of the "temple," John Bates Clark and Irving Fisher. They and others brought neoclassical theory into American journals, classrooms, and textbooks, and its analytical tools into the kits of researchers and practitioners. Eventually, for better or worse, their paradigm would dominate economic science in this country.  In reviewing the history of utility theory, economist George Stigler wrote that Fisher's doctoral thesis had been "brilliant" and stressed that it contained "the first careful examination of the measurability of the utility function and its relevance to demand theory." While his published work exhibited an unusual degree of mathematical sophistication for an economist of his day, Fisher always sought to bring his analysis to life and to present his theories as lucidly as possible. For instance, to complement the arguments in his doctoral thesis, he built an elaborate hydraulic machine with pumps and levers, allowing him to demonstrate visually how the equilibrium prices in the market adjusted in response to changes in supply or demand.

Using a quote from the above article, answer the following question: When did he come up with utility theory?
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Answer:
James Tobin argued that the intellectual breakthroughs that marked the neoclassical revolution in economics occurred in Europe around 1870.