Social Amnesia or Snobbery at its Finest?

Have you ever been walking to class and passed by someone you used to talk to? Perhaps they worked on a project with you last year or maybe you used to live in their building sophomore year. Whatever the reason you were friends, (or acquaintances) you, in fact, at some point talked with these people. Therefore, the only polite thing to do when you see this individual is to say a quick hello or flash them a smile. It never ceases to amaze me how little people follow this rule. It's like after a certain period of time you drop out of their social agenda to be greeted on the sidewalk. Then there are those people you say hello to but don't respond back. This aggravates me to no end. I think it is one of the rudest things people do. So many people talk about how friendly a campus Mercyhurst is, but how friendly is it really? Is this campus really only friendly when you see these people from day to day? People will find any excuse in the book not to look at you. They will quickly grab for their cell phone and pretend that they need to send an extremely important text. Others look straight ahead as if nobody else in the world matters to them. Are people just forgetting that they used to talk to you at some point? Or, are some individuals so concerned with their own lives that they can't dignify your presence with a response? Either way, people really need to take a lesson in respect and politeness and really exemplify how "friendly" Mercyhurst is.