Generating trees!
	We're in CS, so we know about trees!

A binary tree:
	We can do a depth-limited traversal and make up the tree as we go

Actual trees:
	"hardwood" or deciduous
	"softwood" or coniferous
	These are not really synonyms
		Western Larch is the usual local exception
		People call it "Tamarack"
	Non-local example the other direction:  Live oak
	Growth patterns of trees

Textures for trees:
	Trees have bark, which looks like tree bark
	But it varies a lot
		Paper birch, etc
	Trees also have leaves, or needles
		Shape is pretty good for identifying trees
		Distinctions can be pretty fine (sycamore vs. maple?)
	
The binary tree looks deciduous
	Branching factor in real trees
		Tends to actually be 2, but not the same size
	Should branches curve?
		Real ones do
		But how much of a curve?