Update, May 22, 2012: CNN published an article about this blog post.
Sometimes, even the science and studies can be wrong. Not because of an error, but because you didn't dig deep enough.
Apple has an internal system called Can We Talk? where any employee can raise questions on most any subject. So we asked, "Why is the Apple logo upside down on laptops when the lid is open?"
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)
Why was upside down from the user's perspective an issue? Because the design group noticed that users constantly tried to open the laptop from the wrong end. Steve Jobs always focused on providing the best possible user experience and believed that it was more important to satisfy the user than the onlooker.
Obviously, after a few years, Steve reversed his decision.
Opening a laptop from the wrong end is a self-correcting problem that only lasts a few seconds. However, viewing the upside logo is a problem that lasts indefinitely.