What is that other guy doing?

There are lots of different budo styles, and they each have their own way of doing things that is internally consistent.  Rennis Buchner, a fine budoka and excellent budo historian, writes about problem of assuming that you understand what another person or style does just from watching a little bit.  Rennis doesn't write often, but when he does, it's worth reading.  His essay is at
http://acmebugei.wordpress.com/2013/07/26/watch-what-you-say/