free will and chi
ok instead of putting it all on the blog, here's a link to an essay explaining why free will and determinism are not incompatible.
and to completely change the subject, rot 13 said a few days a go that he/she (don't wanna presume!) didn't think that 'chi' was real. well luckily for me i happen to live 5 mins away from one of two of the only shaolin temples outside china and i saw a monk break a real (honestly it was real) metal bar over his head without leaving so much as a mark. another monk was lifted up into the air on 4 spears (sharp enough to split blocks of wood) and he was completely unscathed. another monk pole vaulted with a pole 3 times his size and while in mid pole vault ran up the pole and stood on the top of it.
this one's not from personal experience but:
my friend's dad works for the UN and while in Tibet he was shown a monk levitating (!).
so i believe that chi's real. therefore i believe that correct posture is important in every action that you perform. if your back's not straight and unsupported when you're doin zazen then it's not being done correctly.
also, always bend your knees and keep your back straight when lifting heavy objects (like monks lying on spears).