Your call is the reality. What you see is what happened, not vice versa. Hab, you look for a standard that none will reach. It is the standard that replay has tried, and failed, to achieve - perfect officiating based on perfect knowledge of facts.
Everyone wants a game officiated on perfect facts, perfect rule interpretations, etc. Nobody will ever have one. Games are officiated by people making imperfect judgments based on observations that are shaped by position on the court, temperament at the time of the call, knowledge and experience.
You should always improve your rules knowledge, always try to officiate to the letter and spirit of the rule, work together to achieve more consistency in the field of officiating. But don't ever set a goal of perfection, because you are shooting for something that doesn't exist. Just enjoy the improvements you bring to the game.
BTW - the person telling you the time isn't reporting you a fact - they are reporting what they think their watch says, and they or their watch may not be correct. Even if it is, if you are using their report to make a decision, your concept of time is not necessarily theirs.
