Something that's always bugged me about science fiction is the lack of common sense of characters' bionic enhancements.

No, I'm not going to call them cybernetics.  RPGs and movies have it wrong.  Those aren't cybernetics, they're bionics.  The former is a feature of the latter.

Characters pretty much always seem to have their augmentations installed bass-ackwards.  Most of the time their positioning doesn't make sense at all.  Let's look at some handedness statistics: Depending on where you are, between 2% and 12% of people are left-handed.  Depending on your upbringing (if you were born left handed in some places, whether …