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Chopin's music was used in the 1909 ballet Chopiniana, choreographed by Michel Fokine and orchestrated by Alexander Glazunov. Sergei Diaghilev commissioned additional orchestrationsfrom Stravinsky, Anatoly Lyadov, Sergei Taneyev and Nikolai Tcherepninfor later productions, which used the title Les Sylphides.
What year was the Chopiniana released?
A: 1909

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The Human Development Index (HDI) is a composite statistic of life expectancy, education, and income per capita indicators, which are used to rank countries into four tiers of human development. A country scores higher HDI when the life expectancy at birth is longer, the education period is longer, and the income per capita is higher. The HDI was developed by the Pakistani economist Mahbub ul Haq, often framed in terms of whether people are able to "be" and "do" desirable things in their life, and was published by the United Nations Development Programme.
Who rejected the HDI?
A: unanswerable

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Weinreich's identity variant similarly includes the categories of identity diffusion, foreclosure and crisis, but with a somewhat different emphasis. Here, with respect to identity diffusion for example, an optimal level is interpreted as the norm, as it is unrealistic to expect an individual to resolve all their conflicted identifications with others; therefore we should be alert to individuals with levels which are much higher or lower than the norm highly diffused individuals are classified as diffused, and those with low levels as foreclosed or defensive. (Weinreich & Saunderson, 2003, pp 6567; 105-106). Weinreich applies the identity variant in a framework which also allows for the transition from one to another by way of biographical experiences and resolution of conflicted identifications situated in various contexts for example, an adolescent going through family break-up may be in one state, whereas later in a stable marriage with a secure professional role may be in another. Hence, though there is continuity, there is also development and change. (Weinreich & Saunderson, 2003, pp 2223).
Those with high levels of identity diffusion are classified as what?
A: diffused

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Time travel is the concept of moving backwards or forwards to different points in time, in a manner analogous to moving through space, and different from the normal "flow" of time to an earthbound observer. In this view, all points in time (including future times) "persist" in some way. Time travel has been a plot device in fiction since the 19th century. Traveling backwards in time has never been verified, presents many theoretic problems, and may be an impossibility. Any technological device, whether fictional or hypothetical, that is used to achieve time travel is known as a time machine.
How long has time travel been a topic in science fiction?
A:
since the 19th century