"The procedure has not been performed very often, and the results are often unpredictable due to the intricate and complex nature of the brain. While the procedure has the potential to reinstate some memories and then for the patient’s own brain to fill in the blanks, by forging new connections with disused and/or new neurons and pathways, it is risky. The pat—Hermione could end up absorbing some of the Pensieve as her own memories. It can be very discombobulating for her. The memories may be rejected, causing permanent Confundity; or there is the possibility of destroying neuronal pathways or cranial nerve damage, or worse." Kaneshiro hesitated, "There have been instances where patients fall into a permanent catatonic state, lost in the memories."