When did public lands "run out of" large diameter trees?  How do you get an "old growth forest" without first having saplings?  Where is the evidence that Oregon has been deforested?  Have trees quit growing every year,  in times of excessive moisture and in times of reduced moisture? And why did  disturbance requirements  for pioneer species like doug fir and other conifers,  hardwoods,  evolve?   Do trees migrate,  over generations,  from south to north,  to  higher elevations,  and vice versa,  with ever changing climates?  IS the USFS losing relic forests that cannot be replicated after  fire,  at far more acreages annually than ever to logging?  IF we are 15,000 years into this interglacial period,  where is the 15,000 year old forest?  Have forests moved north over the last 1000 years?  To higher elevations?  Mary's Peak has Hudsonian zone vegetation:  how did that get there?  The Willamette Valley was an oak savannah:  where is it?  If Indians burned,  why is logging bad?