topic summary:
	model of randomized algo
		example
	error reduction
	BPP in PH
	BPP in P/poly
realistic TM models vs unrealistic TM models
randomness
	in computers
	in real life
	theory vs practice
ex: opinion poll
probability
	in inputs
	in algorithms
ptm
	weight transition funtion
	or counting witnesses
def
	bpp
	rp vs np
	coRP
	completeness, soundness
robustness
	chernoff
		relate to central limit theorem
p in rp in bpp
example
	primality
		AKS04 primality test
		via Exercise 10.4 from Shoup's "A Computational Introduction to Number Theory and Algebra"