We were told by the Apple design group, which takes human interface issues very seriously, that they had studied the placement of the logo and discovered a problem.
If the Apple logo was placed such that it was right side up when the lid was opened then it ended up being upside down when the lid was closed, from the point of view of the user.
(If you’re currently using an Apple laptop made in the past eight years, then close the lid and you’ll see that the Apple logo will be upside down from your point of view, but right side up when opened).
Steve Jobs eventually reversed his decision to have the Apple logo placed upside down. I’m glad.