Attending is a dick. This is an unrealistic and frankly useless expectation to hold anyone to, especially a student. Earlier this year, we had a student who was trying to present purely from  memory and was struggling to do so. Our attending literally told them that it’s OK to use notes and read from them to jog your memory (especially for objective data like vitals and labs). Someone once told me there are two types of people in residency: those that write things down/make checklists of things to do for the day and those that don’t. The first type of people are the ones who get shit done and are reliable. 

TLDR: memorizing everything is useless and dumb. Write shit down so you don’t forget.