M. Night Shyamalan surprised the world with SPLIT a few years ago, a film that essentially pointed a camera at James McAvoy and let him go absolutely nuts. With the movie being a secret sequel to Unbreakable, fans got super excited when a third movie, Glass was announced. So before checking out that new movie, we thought we'd take a look back at the split-personality thriller, and all the questions it raises. Like what's up with Dennis’s poor planning skills? Or Barry's lack of typing skills? Or Doctor Fletcher being a huge exposition machine?