Minecraft example:
	Did I remember to climb up to the right spot?
	https://minecraft.wiki/w/Noise_generator

Perlin noise is a pretty good way to do this, but not the only one
	Subdivision and random heights, for example

Landscape generation:
	There are purpose-built programs for this
	Including Blender plug-ins
	https://en.wikipedia.org/wiki/Scenery_generator
	We're talking about how landscapes are generated, so we'll ignore these
		We'll make a crummier one instead

Since we talked about noise already, let's make a noise landscape!
	Set height by noise value
	Let's make a parameterized model!
		hillyness
		gradient
		height
		water level
		snow level

It'll look like a 3D map in a visitor center
	Water should really be animated, reflective, and transparent
		Minecraft water isn't animated unless it's moving
	Vegetation areas should have vegetation, not just be green
	Vegetation might be different on slopes
		A steep enough slope might be rocky instead
	Biomes are real, not just a Minecraft thing
	Snow won't cover a surface that's too vertical
		Not a strict rule - depends on wind conditions, etc
	North vs. South facing slopes have different sunlight and water