What Does Change Mean, Anyway?

Change: alteration, mutation, variation, modification, transition, turn, shift, diversion, break, New Deal, New Frontier, generation, deterioration, transformation, transfiguration, makeover, evolution, etc. Check out a thesaurus. There are dozens of meanings of the word and/or concept of CHANGE. Which one is Mr. Obama talking about? Change doesn't automatically mean good. I thought I'd freak out every time someone said the word CHANGE. Enough already!