The progression of the pictures indicate what is required to complete a case study:
1) Professional attire
2) Lots of colleague support and opinions
ex.Emily: What the heck does _________ mean/do/matter for?
Anne: bla bla bla (perfect explanation... better than google/NCM/Krause combined).
3) A big fat mess in the intern room and pressure ulcers from sitting in the same chair for HOURS and HOURS figuring everything out.
4) A GINORMOUS stack of books to reference.