I just reviewed today some old posts here and in other forums about rooting of cuttings in anticipation of getting some fig cuttings. Having read a couple of posts, I have the following questions: 1. It was stated that the temperature difference between the buried portion of the cutting (at high temperature) and the portion above the rooting medium (at low temperature) accelerates root extraction. The emphasis was on the difference of temperatures between the buried and unburied parts of the cutting. If so what is the reason (theory if you call it so)? Will the rooting take faster with differential than if both sides of the cutting were at the same appropriate high temperatures in an enclosure? If true then most differential can be obtained at the cost of humidity by removing the dome! 2. Why is the light above the cuttings necessary at the times when there are no leaves yet to do photo-synthesis? There may be a good reason but I am not aware what it is and will be good to know.