The Juxtaposition Cross of Stillness is named for Gate 52 and Gate 58, both seated in the Root. Human Design reads Gate 52, from Hexagram 52, Keeping Still, as a stillness that holds a person still long enough for perspective to form; and Gate 58, from Hexagram 58, The Joyous, as vitality and the joy of being alive, expressed as an urge to improve things. 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 21 and Gate 48. Gate 21 sits in the Heart, or Will, centre and is read as the will to control material life on one's own terms; it pairs with Gate 45 in the channel of Money. Gate 48 sits in the Spleen and is read as a well of instinctive knowledge not yet made useful, with a fear of being inadequate to what is asked; it pairs with Gate 16 in the channel of the Wavelength.
So a chart carrying this cross rests a Root pair of stillness and vitality on its surface, both fixed to the same centre, while beneath it a willed control of resources answers to an unspent depth of instinct. The numbers are inherited from the I Ching; reading them as one cross belongs to the modern reading, not the classical one.