Hi, Your reference to Amdahl's law was terribly appropriate. I thought that you were going to talk about where real speed ups need to be accomplished. But, you didn't. The appropriate comparison here is not New York to Boston. It is New York to Tokyo.
Computers do the little things fast enough.
When it seems virtually instantaneous for a task to occur users will not care if you improve on that. I had to wait for my iMac twice last week. Once was when I was working on Photoshop. The other time was while I was converting a movie from mpg to Cinepak. I did not have to wait for my computer in spell checking, writing, filling out spreadsheets, saving files, etc.