Eighty percent about what you need to know about a persons posture and balance can be got by comparing hip positions to shoulder positions to feet positions. Add in hand positions and you have what they are doing too. Just an example of systemizing what you look for while using thin-slicing and blink cognition.
Suggested Reading:
Edward E. Wilson 
I don’t know if you saw a Fight Science by the National Geographic Channel (can be downloaded as a torrent file), but they use scientific principles to analyze the bio-mechanics of various martial arts. The ninjitsu master had nearly zero ‘sway’ (degree of personal center of gravity) fascinating look at how we can affect this these.
By: Lemonkid on December 29, 2006
at 12:59 pm