The Juxtaposition Cross of Interaction is named for Gate 7 and Gate 13, both seated in the G, or Identity, centre. Human Design reads Gate 7, from Hexagram 7, The Army, as the self cast in the role of leader, guiding toward a shared future without necessarily holding formal power, and Gate 13, from Hexagram 13, Fellowship, as the listener, the one to whom others confide and who holds the past. Juxtaposition Crosses are set apart from the Right Angle and Left Angle families, reserved for the four line one profile, and read as fixed almost past the point of alternative.
Its design half is Gate 23 and Gate 43, which form a channel of their own elsewhere in the mandala, the channel of Structuring. Gate 23 sits in the Throat and is read as the voice that turns a strange individual insight into language other people can take in. Gate 43 sits in the Ajna and is read as a sudden inner knowing that arrives whole and is hard to explain to anyone.
So the cross names an interaction of leadership and listening on the surface, Gate 7 and Gate 13, while beneath it a design pair, Gate 23 and Gate 43, already forms its own structural channel joining insight to expression. The numbers are inherited from the I Ching; reading them as one cross belongs to the modern reading, not the classical one.