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Viscoelasticity is a phenomenon of fundamental importance in the understanding of the behavior of polymeric materials. Mechanical properties of polymers are of course temperature-dependent, but are also time-dependent. It is useful to visualize this aspect as a prelude to a more sophisticated understanding of viscoelasticity. We present a simple system, namely rubbery bilayers with one layer exhibiting time-dependent behavior, as an exemplary illustration of viscoelasticity using commercially-available materials.