Well the Modern Arnis, Escrima and Arnis de Mano are generally the same it a wonderful and dangerousart use by the early filipinos for fighting using Kris instead of sticks, after the spanish occupation the spaniards prohibited the used of the kris the filipinos substituted sticks with almost the same effectiveness thus the arnis was born. As ive said earlier even the us special forces are incorporating it in their hand to hand combat regimen since arnis is effective even without the use of the sticks even bruce lee who is well known for his use of nunchucks incorporated it and is now part of JKD. At the moment we the the practitioners of the different variation of arnis are trying to standardize and develop the the best technique from the different schools cause arnis is a very diverse technique it even includes the use of balisong(butterfly knife)