Just saw the movie and must say it impressiv to say the least:-)
But…man I was disappointed to see feathers on the arrows (or what looked exactly like feathers…barred and all)…..especially since our heroes training set had what looked like semi-transparent scales.
They had gone to great lenghts to make the fauna and flora different from earths, they even made all the expected analogies….but birds did not seem to be part of it (and why would they?).
Judgeing by the arrowheads however the Narvi (is that how it is spelled?) seems to have discovered the usefullness EFOC independantly from us;-)
(yeah I know…the Narvi was too human looking too…but the movi would not work otherwise;-)