1.	If actors don’t (or are unable) to pay attention, information “on offer” will not be acquired;
2.	People have limitations on their ability to process information, so if, for example, one is at a party and surrounded by multiple simultaneous conversations it is almost certainly the case that not all of this available information will be processed;
3.	Individual differences (as well as situational pressures) will influence what different actors attend to, and how intensely they attend to it, at any given time.