What is "impracticalities"

Usage examples of "impracticalities".

But some of the stuff showed traces of influences, radiated out from Mingulay and bounced back -- voyages later, decades later -- of fashions from twenty-first-century Earth: silly little details that she recognized from the ship's picture files, such as the drawstring hem and the duffel button, these trivial impracticalities betraying their origins like junk DNA.