according to my friend, “a dot product girl” is a girl that looks cute from the front, but not so much when looked from the side. my other friend turns her head at him with disapproval – not a polite idea. i suggest that perhaps we could call such individuals Lambert or Diffuse Persons instead. we soon realize that, sure enough, that wouldn’t describe well what happens when you look to somebody from their back, unless you have your own wrapped and properly exponentiated dot product. anyway, by the time we decide we need circular harmonics to model these sort things we realize the bottle is empty and that, perhaps, it’s time to leave already.