Fair warning, dear reader: this may be the most pedantic post in the history of TUAW. Maybe in history, period. But I can't help it: someone is wrong on the internet.
Here's a fun trick. Go to the Apple menu on your Mac and select "About This Mac." A little window will come up listing your processor and RAM specs. Mine describes a 2.6 GHz Intel Core 2 Duo processor and 4 GB of RAM. If I click "More Info" to open System Profiler, I'll also learn that I have a 250 GB hard drive.
Now go to Apple's product page for the MacBook Pro and click on "Buy Now" to see descriptions of tech specs. The 17-inch model is currently listed with a 2.53GHz processor, 4GB of RAM, and a 500GB hard drive. Other than the obvious differences in specs, did you notice anything different? All the spaces disappeared.