Well, the preacher had it wrong.
Ya think?
He also claimed the American Indians never wasted anything in lived in pure harmony with nature. He was a bit flustered when I described “Buffalo Jump, Montana.”
He recovered and claimed they gathered everything from the animals they ran off the cliff.
LOL! There was a mountain of carcases. Prime cuts (hump and tongue) were eaten on the spot, the available carcases in the pile skinned and likely smoked (not counting what was eaten on the spot), but before they go to the bottom of the pile, it is likely the smell of decaying meat drove them away.
The ones which were used were used efficiently insofar as they provided enough for the band involved to get what they needed, but that did not mean all the animals were used, nor even accessible. Of course, that varied from site to site, depending on topography, but the belief was that any animals which escaped would communicate the technique to others and prevent the next hunt from being successful.