Change is Needed, but What Kind and How Much?

Question: Both Barack Obama and John McCain vow to change things when they become President of the United States. But what will their change entail, specifically as it has to do with their use of the word fundamental? Sen. Obama uses it to describe the change he's going to make - "fundamental change", and Sen. McCain uses it to describe what's gone on - "the fundamentals of our economy are strong". Please respond.