Idiots Who Sit Directly Across From Me At the Library

i don't know about other people, but i thought it was common knowledge that if you sit at the same four person table with someone you do not know at the library, then you sit diagonally from them, not directly across, not right next to them, DIAGONALLY.  maybe it's not distracting to the personal space invader, but i find it really hard to constantly try not to make awkward eye contact with you the whole time i am trying to study, but i can't really study, because an idiot is freakin sitting directly across from me.  move over a chair, kid.  i don't care if you need to charge your computer, i'm pretty sure the cord is long enough for you to move one chair over.  it's not that difficult.  you'd think people would have issues with personal space and what not, but whatever. some people's kids.