Test review guide:
	Let's put one together
	I think this class already had the large note option set

radix tree:
	Did you cover these in 311?
		I haven't covered them in 311
	trie
	A trie doesn't store keys in the nodes
	Think of a thing to store a dictionary for spell check
	Wikipedia pictures of this stuff
	The radix piece:  Merge single children with parents
		Might eliminate most of the nodes
		Can be more branchy than binary	

Microkernels:
	Picture on Wikipedia (under "Hybrid Kernel")
	Remove lots of stuff from the kernel, avoid memory crashes
	Filesystem can't be corrupted by networking stack, etc.
	Minix vs. Linux debate, Tanenbaum comment
	Performance

Hybrid kernel:
	More in userspace than Linux and FreeBSD
	Less than a true microkernel
	Windows NT, XNU
	Linux doesn't believe in this category

Portability

OS design goal:
	Performance
	Portability
	These are sort of at odd sometimes!

Did Linux steal from Minix?
	Tanembaum:  No, but he should have!
	Kenneth Brown book, debate