Speaking as a lefty, I think it is silly to think a left-handed person would be more likely to put the label on the left side. We are remarkably adept at fitting into a right-handed world.
But, seriously, I don't think handedness would come into play. For a lefty to be more predisposed to put the label on the left side, they would have to have done so with the box top
up. Not only would this be awkward, but it would be quite hard to get the label on straightly!
In all likelihood, the boxes were turned on their edge and then the label stuck on . . . so it wouldn't really matter if the person were left or right handed . . . they would just flip it to the right side and use their dominant hand.
I can think of three more likely explanations:
1) Carelessness. It was simply an accident (perhaps one that occured more than once).
2) Boredom. The person did it just for the hell of it, figuring it wouldn't matter. That may sound odd to some people, but if I were assembling a bunch of box sets, it's something I might do . . . just for fun!
3) Done with a purpose: It's possible that there is some flaw that was on that side (perhaps something that affected several boxes) and the label was put there to cover it up.
"Gleemonex makes it feel like it's seventy-two degrees in your head... all... the... time! "
