A part of the brain, the hypothalamus, an almond-sized structure important for hunger, thirst and body temperature is also thought of to control sexual appetite. Now, it is newly found to be a center for aggression and violence. For the first time, this section has been isolated according to an article I read from Science Magazine, on-line. Notably, the sexual part and the violent part are in very close proximity and tests on rodents indicate that they interact somehow when there is sexual violence. In size, this is a minor part of the hypothalamus. The hope of the researchers are that they can ultimately change the violence without affecting the sex drive.
Ordinarily, I would assume that the extent of this would be worth the effort to reduce this kind of violence in society, but I am thinking that they are stopping short of what could be the potential of developing genetically engineered sexual warriors but not to the extent of exceeding a partner's predefined limits, if any.
In my view, if the procedure could then be reversed, with do-it-yourself equipment, you can make someone date specific. Yes, we can have an Ap for this.