When was Paradox in Oz created?
Paradox in Oz was created in 1999.
What you may be referring to is the Archer's paradox. This is when an arrow is loosed from a stave that doesn't have a cutout to hold the arrow (a.k.a arrow shelf). The arrow is pushed away from the stave and thus creates what's known as the Archer's paradox, where you have to compensate for the sideways off-shoot created by this effect.