To me, NR suffered from Dad & Mom wanting to cut him, a drug addict hostile son, off. So, at the time of stabbings and slicing Mom and Dad's throat he's insane by media, but all of his actions post killings he does not appear in any way to be insane. I don't buy this. In the video clips of NR roaming the streets post murder, he appears to be at ease and feeling free without a care in the world. Huge public fight at a celebrity party brought shame and anger to son in which he finally acted on impluse that was perhaps street drug induced or maybe not. Not insane at time of murder in my opinion