Baker's Critique of Fule

William L. Baker's letter to the editor is to critique the paper of Fule et al.'s calibrations didn't work to accurately estimate fire intervals in the Grand Canyon National Park area and that Fule et al.'s claims that severe, stand-replacing fires were infrequent in the area.  Baker points out that failure to visually detect patches indicative of large fires is not evidence of their absence. Baker says that fuel accumulations could have been limited by frequent fires burned at insufficient, moderate rotations.  Fule also doesn't take into account the period before the origin of the oldest tree, when large fires could have wiped out everything.
Baker posits that composite fire intervals are unreliable in determining accurately fire regimes because the method tends to skew the number of fires upward due to the methods's way of finding more fire scars as more area is covered with sometimes finding just one or two small trees burned but no land covered by the fire.  Baker says that the fire interval could be 10 times as great as the findings claim.