[CommonHighrise]

Ive watched a few of your 'Inverted Edge' clips Mercop, and I gotta say I do like the technique in dealing with control and attack of an opponent's limbs, as it provides both a decent lock, and a cut that benefits from natural muscle movement. While Im still in the school of 'Edge Towards Enemy', it provides a good argument for carry of a double-edged dagger in self defense.

Natural points of aim v. tactical (oh no, the evil word) points of aim is a good topic to bring up. Like most things dealing with self defense, its best to think of any movement not as what its benefits are, but what happens when it goes wrong. Bringing a blade to bear directly on the chest or to the head may seem like the most devastating areas to attack, can quickly leave you comprimised. The chest has alot of bones in front (ribs, sternum, clavical) to either stop your blade, or stick it. It also has a large amount of 'slow kill' space, where a lethal wound can be delivered, but not neccisarily shut the person down fast enough. The head is small, mobile, high up, and pretty well armored compared to other larger, softer, more centrally located targets.

LastManOut, whats the name/instructor of the class you took? Those techniques, though awesomely brutal, leave the defender in many comprimised positions. E.g. the 'anus strike' would be better performed directly to the genitals only, as it negates you having to extend your weapon hand between your opponents legs.