serial hi-liters

i was riding on the subway the other day in to town to meet with a reporter and i was people watching as always. and that's when i spotted it, the serial highlighter. what in the world am i talking about? oh you know. the person who is studying/reading with highlighter in hand and cannot keep from highlighting every single sentence they read. why? you know that every single sentence isn't that important, but you never know... it could be. i am (or was) plenty guilty of this practice/sickness. my favorite was when i highlighted the crap out of something, completely filled the page with yellow and pink and my favorite blue, and then you don't even go back to that page to ever look at it again. and then you just have a useless page with highlighter thrown up on it and when you turn to the page, your eyes go into like epileptic shock and you can't see correctly for the next couple of hours. it's a strange thing and something i am not sure i will ever understand.