Why is the Apple logo upside down when the lid is open on the older Apple notebooks?
A former Apple employee, Joe Moreno has a blog post explaining why:
So when closed, it appeared right-side up from the point of view of the user. But when opened, it appeared upside down from the perspective of on-lookers. Joe Moreno states that "Opening a laptop from the wrong end is a self-correcting problem that only lasts for a few seconds. However, viewing the upside logo is a problem that lasts indefinitely."
All of these decisions of course went through Steve Jobs. With the release of the current Macbook product lines, Jobs reversed his decision and had the logo appear right-side up from on-looker's perspective.
Upside Down Apple Logo - http://blog.joemoreno.com/2012/05/upside-down-apple-logo.html
The Upside Down Apple Logo: A Steve Jobs Mistake - http://www.cultofmac.com/168377/the-upside-down-apple-logo-a-steve-jobs-mistake/