Puzzle : growth, even for high volume villages, is above the predicted harvest.
It does not appear likely that volume will increase without bound
We are examining these functions further, hope to find that harvest function has greater upwards slope.
In terms of optimal management, we want to know the value of trees as a function of volume. Are villages with higher volumes producing for sawtimber where the lower volume villages are mainly producing for polewood, firewood, etc.?