I think it depends on a person’s level, what is it that you’re training for what skills does your style develop or use.
At higher levels I haven’t seen to many CMA people “spar†why is this? I think because it tends to introduce fixed ideas of fighting (self-defense). Assuming this is the goal of your training,
They have trained certain skills and ideas contained in their style to a degree that they can apply it.
also they want to keep their minds open.
an example might be if you’re attacked and there is a bottle or brick laying there dose this become part of your art? or do you go for the shoot or what ever? How you answer this will depend on your out look and why / how you train.
i think there is no right answer depends on what you want.
What are you training for: this is a key question, answer this and you will have a clear idea of what and why you need to learn or do something.
Deny this and I think a large part of your training time will be wasted. For example if you intend to fight in any of the current contest then you need to train for the type of contest you want to fight in. the training itself will condition you mind and body to think and see things in a certain way.
Many of these skills will carry over to self defense uses but I think they may also limit a persons out look in terms of self-defense.
People tend to view things in the context of their training and experience.
Look at the many post concerning the merits of BJJ vs CMA. While I think there are similarities to many things, true fighting is formless. the way that works at that moment is the correct way.
The higher level of skill required to understanding use a style (idea) the longer it takes to build real skills. Some may never reach the point of having real skills. Just as many do not get to the level of playing in some of the contest that many talk of here.
the question of can sparing help you to the next level, I would say depends on what you are training for and the goal or aim of the practice.

Good topic
bamboo leaf
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