why UML?
	to make Marty believe you're doing work
	
	establish relationships btwn classes
	
	force honesty about your understanding of your project
	
	formal representation of classes w/o committing to a language
		
		generate code from UML


when UML?
	during design phase, before coding
	dark alley
	with existing code
	when testing
	see higher level behavior
	
	
what doesn't go in a UML diagram?
	helper functions
	duplicates
	trivial (get / set) methods

Poker game classes
	Deck
	Hand
	Card
	PokerGame, Table
	Player -> 
		Human
		Computer
	Dealer
	Round
		current players
		pot
		each player's bet
		kind of round: betting or playing