I once read that the limbs of trees grow through "the cracks in space," a description that had a particular fascination for me. I think the author was actually talking about different ways - different growth patterns, and shapes and therefore leaf placement - that trees develop to satisfy the requirement of maximising access to sun for photosynthesis. There certainly are many forms of trees, and I find that the trees that stand by themselves, with enough room to extend to whatever shape and size they are genetically capable of achieving can be wonderfully impressive and a bit magical. This one was purchased by a woman who works with "special needs" children and she says that it speaks to many kids and their parents.