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In a chapter of The Mathematical Foundations of Quantum Mechanics, von Neumann deeply analyzed the so-called measurement problem. He concluded that the entire physical universe could be made subject to the universal wave function. Since something "outside the calculation" was needed to collapse the wave function, von Neumann concluded that the collapse was caused by the consciousness of the experimenter (although this view was accepted by Eugene Wigner, the Von Neumann–Wigner interpretation never gained acceptance amongst the majority of physicists).

What "outside of calculation" variable could initiate collapse in von Neumann's conclusion?
Answer: consciousness of the experimenter
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Sometimes circumstances such as a good breeding season followed by a food source failure the following year lead to irruptions in which large numbers of a species move far beyond the normal range. Bohemian waxwings Bombycilla garrulus well show this unpredictable variation in annual numbers, with five major arrivals in Britain during the nineteenth century, but 18 between the years 1937 and 2000. Red crossbills Loxia curvirostra too are irruptive, with widespread invasions across England noted in 1251, 1593, 1757, and 1791.

For what reason would birds mor far beyond the normal range?
Answer: a good breeding season followed by a food source failure
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40°48′27″N 73°57′18″W﻿ / ﻿40.8076°N 73.9549°W﻿ / 40.8076; -73.9549 120th Street traverses the neighborhoods of Morningside Heights, Harlem, and Spanish Harlem. It begins on Riverside Drive at the Interchurch Center. It then runs east between the campuses of Barnard College and the Union Theological Seminary, then crosses Broadway and runs between the campuses of Columbia University and Teacher's College. The street is interrupted by Morningside Park. It then continues east, eventually running along the southern edge of Marcus Garvey Park, passing by 58 West, the former residence of Maya Angelou. It then continues through Spanish Harlem; when it crosses Pleasant Avenue it becomes a two‑way street and continues nearly to the East River, where for automobiles, it turns north and becomes Paladino Avenue, and for pedestrians, continues as a bridge across FDR Drive.

The Interchurch Center is the start of which street?
Answer:
120th Street