Yeah, they explained in one of the tour videos that they spend most of their time in the "upward" position. The lights for example always come from the "ceilin

Yeah, they explained in one of the tour videos that they spend most of their time in the "upward" position. The lights for example always come from the "ceiling". Apparently it helps with the visual frame of reference (since you lose your sense of balance) and more convenient to read the thousands of various labels at a quick glance.