Agreed, we're not dealing with cars here. The advancements in computers are radical and happen quickly, hence Moore's law. I have to agree, a comparison here is

Agreed, we're not dealing with cars here. The advancements in computers are radical and happen quickly, hence Moore's law. I have to agree, a comparison here is 4-doublings of processor power, meaning Windows 7 can be 16 times more CPU intensive than XP and appear to be the same speed, because it still only occupies say 5% of the total CPU usage. The comparison here is between the Model T and a new Mustang, not between a '02 model and a 2010 model.