The thought that EFPS will deliver more head up is a huge mistake. It will force controllers to be more inside the office for very simple reasons. The fact that one is not able to physically touch the strips anymore has a huge impact on STM (Short Term Memory) You will forget data quicker. This will force you to look at the strip over and over again, hence more head down. Where we used to be able to know what what was on the strip after a glance, we now will have to process information in quite a different way. This takes away processing capacity from our already limited system. I am talking Human Information Processing now. Also the fact that you will not be able to physically put the strip where you want will have its consequences. Situation Awareness will decrease, which will force the controller to go back inside the office again. Hence EFPS creates more head down time then PFPS.