what exactly is that supposed to mean? how do we know we're actually as big as we think we are...think about size reletivity outside the universe, if in fact the universe IS infinite. what do we have to compair to, other than our own standard? what i'm trying to get at here is, how do we know we dont make up part of a molecule on some guy's taco in some other civilization? how do we know we're not 'microscopic'?

but the real question you have to ask yourself: does it matter? Seriosly, how does this affect you at all? I personally have no problem with being a infinatly small being. Remember its not the size that counts but what you do with what you got

Usually when people say 'universal standard of measurement' they mean a standard of measurement that is used by everyone - that is to say, universally.