The Juxtaposition Cross of Self-Expression is named for Gate 1 and Gate 2, both seated in the G, or Identity, centre. Human Design reads Gate 1, drawn from Hexagram 1, The Creative, as the urge to give an individual creative direction some outward form, and Gate 2, drawn from Hexagram 2, The Receptive, as the receptive sense of where that direction is meant to go. Juxtaposition Crosses stand apart from the Right Angle and Left Angle families entirely, tied only to the four line one profile, and the system reads them as the most fixed of the three kinds, closer to a single note held than a direction chosen.
Behind that named pair sits the cross's design half, carried unconsciously: Gate 4 and Gate 49. Gate 4 sits in the Ajna and is read as the mind's habit of proposing answers to questions still open; elsewhere in the mandala it pairs with Gate 63 in the channel of Logic. Gate 49 sits in the Solar Plexus and is read as principle, the sense of what is acceptable that decides whether an arrangement continues; it pairs with Gate 19 in the channel of Synthesis.
So the chart this cross names carries a creative identity seeking outward form on the surface, Gate 1 answering to Gate 2's sense of direction, while underneath it a mind that keeps proposing answers, Gate 4, answers in turn to a Solar Plexus judgment of what is acceptable, Gate 49. Every hexagram involved belongs to the old I Ching; reading four of them together as one incarnation cross is the modern system's own construction, dated to 1987.