This is a clip from 12 Monkeys. Brad Pitt's character Jeffrey has stolen a key so that Bruce Willis a.k.a Jim can escape from the mental asylum. Problem is that Jim has been drugged up to the eyeballs. It's a great scene.. but what does it have to do with swordplay?
Swordplay can be thought of as a series of windows and doors of opportunity opening and closing. Different openings give you different options, and if you are smart and adaptable, one opening will lead straight to the next, or perhaps even directly to the exit.
Sadly these openings are not always meant solely for you, and often by walking through one door, you may create a window for you opponent that you must bar if you are to continue on.
The other difficulty is that these windows are tiny, sometimes in space, but for sure in time. They are fleeting at best, and in the same way that a baseball hitter needs to align to the pitch before the ball is thrown, you too have to see it coming before it arrives to take advantage of it.
One option is to make your own door, but like in the clip, you'll need a distraction to cover your true motives (though sometimes you are truly lucky and you can do it in plain sight and still not be 'seen').
It takes practice to get your nervous system on line to notice the action, and training to do this can feel a little like being Jimbo (which I guess would make me Jeffrey?).
It takes time. Really. Time spent watching, participating, and experimenting. However, once you can understand what is going on, a whole new world will open up. Not only will you be a drug free Jim, you will be Jeffrey too.