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[[image]] VECTOGRAPHY [[image]] [[2 pairs of 3D glasses taped into book, text on glasses read, "Press IN on nose. Edges bend and grip." and "for POLAROID* 3-DIMENSIONAL PICTURES / Press IN on nose. Edges bend and grip. / This is not the type of viewer designed for"]] 8 [[end page]] [[start page]] [[blank page taped into book]] LIFT [[arrow up]] human visual acuity cannot resolve such closely spaced lines. However, under unusually high magnification, one can observe a lenticular pattern 9