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150: Sidetrip

Because order matters in Smalltalk, you should not think of the ifFalse:ifTrue: message as a reordering of the keywords and arguments in an ifTrue:ifFalse: message. Instead, you should understand that the ifTrue:ifFalse: selector and the ifFalse:ifTrue: selectors are distinct selectors, both of which happen to label methods that do the same work.