Accident.
"the world of Atzilut, from the moment of its emanation after the "breaking of the vessels" of the previous world of Tohu, is in a state of perfect and eternal rectification. This is not the case with regard to the three lower worlds, which require our Divine service on earth to redeem the falling sparks of Divinity in them and thereby bring them to a full state of rectification"
The two hands which act together to form all reality, chesed (72) plus gevurah (216) = 288 = 2 times 12 squared. 288 is the number of nitzotzot "fallen sparks" (from the primordial cataclysm of "the breaking of the vessels") which permeate all of created reality. Through the "dual effort" of chesed and gevurah, not only to form reality, but to rectify reality (through the means of "the left arm repels while the right draws near"), these fallen sparks are redeemed and elevated to return and unite with their ultimate source. In a universal sense, this is the secret of the coming of Mashiach and the resurrection of the dead.
retrieve the Nitzotzot ("Holy Sparks") trapped in that realm and return them to their Source -- thereby "repairing" (or "reuniting") the Face of God.