I was thinking about the knife while catching up. There has been speculation about whether a small folding pocket knife is legal on a school campus and - if so - how small is legal and how big is illegal. And if a small folding picket knife that is legal would have a large enough blade to stab someone deep enough to penetrate the heart. But let's disregard that for a moment and consider three things: 1 - it was a folding knife and was folded, then he had to remove the knife, unfold it, and then stab. 2 - the knife was already unfolded in the backpack. He just had to grab it and swing. 3 - it was a fixed blade knife, either in a sheath or not. If unsheathed, he just need to grab and stab. If sheathed, he had to pull it from the sheath first. Does any of those change anything about intent? If you have time to pull the knife and unfold it, I'd think you also have time to walk away. Does unfolding it imply intent to use it? Does carrying it unfolded and "ready" imply you are expecting to be in scenarios where you would have to use it? If you have pull it from a sheath, I'd think you're intending to use it. Just wondering if the type of knife used and how it was carried in the backpack could have any bearing on the self-defense theory.