Humor works as lubricant in human life and put a straight jacket against conflicts with self and outside guiding towards development of congenial working environment where there will minimal barriers in communication either horizontaldiagonal or vertical.
Indeed, from a corner viewpoint our eye moves up from planar surfaces to solid volumes in an elegant juxtaposition of horizontal, vertical, diagonal and rounded elements.
Participants place markers over randomly called numbers on the cards in an attempt to form a preselected pattern such as a horizontal, vertical, or diagonal line, or all four corners.