This is what I've always thought. I think ed Rosenthals book taught me that. It seems that alot of people are defoliating though. Then I see a little bud site not doing so well and I want to rip off a leaf....Those big fan leaves are energy powerhouses for those undeveloped buds. I tuck bigger leaves out of the way to let more light in. Some monsters down low I will remove but only if they are near the soil . Leaves down In or near the soil are collectors of mold or rot and other shit I don't want so those I do remove.