Zepp
Master of Arts
This is sort of an offshoot of this thread: http://www.martialtalk.com/forum/showthread.php?t=15779&highlight=evolution - so I thought I'd call it a sequel. 
Tae Kwon Do has definitely evolved over the past 50-60 years, and this evolution has resulted in different styles under different organizations. This evolution has often taken the form of incorporating techniques and teaching methodologies from other martial arts. If we take a look at some of the threads this particular forum, we see that many people here train at schools that include Hapkido in their teaching of Tae Kwon Do. Some schools add knife defenses learned from Filipino martial arts, some include grappling, others teach the use of non-Korean weapons such as nunchuku. I've even heard of schools that teach students how to throw roundhouse kicks with their shin (as in Southeast Asian arts like Muay Thai).
My questions to you:
Does Tae Kwon Do need to grow in terms of the techniques it teaches or the situations it prepares us for?
If so, is it necessary to bring in material from other arts? Does anyone think it's unacceptable to borrow?
If the curriculum inlcudes material that is not "native" to Tae Kwon Do, is it still Tae Kwon Do?
Is there a difference between bringing material from other Korean art compared to non-Korean arts?

Tae Kwon Do has definitely evolved over the past 50-60 years, and this evolution has resulted in different styles under different organizations. This evolution has often taken the form of incorporating techniques and teaching methodologies from other martial arts. If we take a look at some of the threads this particular forum, we see that many people here train at schools that include Hapkido in their teaching of Tae Kwon Do. Some schools add knife defenses learned from Filipino martial arts, some include grappling, others teach the use of non-Korean weapons such as nunchuku. I've even heard of schools that teach students how to throw roundhouse kicks with their shin (as in Southeast Asian arts like Muay Thai).
My questions to you:
Does Tae Kwon Do need to grow in terms of the techniques it teaches or the situations it prepares us for?
If so, is it necessary to bring in material from other arts? Does anyone think it's unacceptable to borrow?
If the curriculum inlcudes material that is not "native" to Tae Kwon Do, is it still Tae Kwon Do?
Is there a difference between bringing material from other Korean art compared to non-Korean arts?