Greeetings, I'm a bit confused about something that I've seen lately and I was wondering if any of the PT practioners could fill me in. I've read a little about the Pekiti Tirsia system and then I came across something else that read 'Dekiti-Tirsia Sirradas'. My question is what is the difference between the two systems and are they related? And if so, were they once a whole system and then split or are they 2 seperate systems that have evolved on there own?? W.v.