Also to say that technique is a very badly treated term, in martial arts.
We seem to have a lot of people believing that techiques should present good stetic and some "easyness", all aspects that live only in the same universe we came up with that belief from: The movies.
Not to say a perfect applier of a technique cant apply it on a inexperienced person with that kind of easyness and stetic, but surely that will be a rare moment.
On MMA, people very well trained, with the proper knowledege and great technique, when end up applying technique on another fighter, also very well traind, with proper knowledge and great technique, it is simply beautifull, even if it is not pretty.

A simple definition of technique can be that technique is a process created to reach a certain result, on a certain subject or area of action.
So we have techniques on all sports, that have the purpose of giving results in competition.
Once, someone found out that on High Jump (jumping over a hig bar), an olympic sport, he could get better results jumping on their back, instead of like in the old days, with one foot first and facing the bar. Because everyone is focused on the result, instead of beauty, stetic, "aparent easyness", or even maintaining their master title, everyone tried it and sooner realised that technique gave better result to anyone, not only the person that "invented it".
No one was very worried with using a technique discoverd by other person, or loosing the technique they trained for so long, and reason is that they want the best results, simply. They know the name of the person that discoverd the technique will be on a book forever, but they can, if using the technique properly, also turn in to legend, have their name on a book also, win a medal and... be their best.
High Jump techniques are made to jump.
Tennis techniques are made to get the ball to the other side of the net the best way possible.
Martial arts techniques are made to... fight! Simply.
If they cant be used to fight, they are not techniques, no matter how pretty and stetic, and ancient, and easy they are.