No matter how many times you see something, it can always change

Many are the times where I just walk along, swigging a bottle of fresh water, and I think to myself "Everything is the same damn way it was, nothing has changed, and I doubt it will for a while." Then something amazingly out of whack happens. Something decides to change, small at first, but then steadily it becomes noticeable. It is as if a new slightly tweaked perspective is cast on the entire location that the change occurs. It starts to beg the question, just how sensitive is our perspective towards life and our surroundings? Our minds are very changable and can mould into an acutely different shape at every gesture we recieve, like a delicate and eager A.I.