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ACHIM LANDWEHR's keynote "Nostalgia and the Turbulence of Time" reconstructed the history of nostalgia from the year 1688, in which the physician Johannes Hofer had coined the term. Landwehr connected the birth of nostalgia to the invention of the present in the seventeenth century, the topic of his latest book. Stressing the temporal dimension inherent in nostalgia from the very beginning, he contrasted the perception of time before and after the seventeenth century, when the present became much more important and the past lost its exemplary character. Landwehr described nostalgia as a time practice that produces unique time by connecting the present time with unpresent times. Instead of understanding nostalgia and history as opposites, as is often the case, he emphasized their communalities.