Stefania has brought an assortment of shoes to the laboratory to see which ones maximize her comfort and control of the pedals of the laboratory pumps. She begins by working each of the pedals barefoot, then moves on to a pair of nearly flat-heeled thong sandals, then a pair of very bare high-heeled sandals, then a pair of "Z-strap" flat sandals, a pair of low wedge-heeled thong sandals, a pair of very rare mid-heeled thong dress sandals, and a pair of flat T-strap sandals. Which will she prefer? There's only one way to find out!