Did anyone notice that it was asymmetrical? I know I didn't. And given other mentions of right-handedness in the OS, and the oddity of it being by accident, I'm more than willing to believe it was intentional.
The white plastic Macbook has screws that appear to be purely decorative, on the left side of the case . The story goes that Jobs insisted on them being there, to achieve symmetry with the functional screws on the right hand side.
This [1] was after Jobs stepped down as CEO, but it was obviously being planned while he was chief. The company went to an almost excessive extent in order for the store to be symmetrical.