You are reading this right now, these words are entering your brain and you are reading them currently. You might not have wanted to read this paragraph, but it's too late; You're in it now. In a moment you will be reading the next sentence, a moment ago you were reading the previous sentence, but now you're reading this one, and it's quickly coming to an abupt stop. Right now you are older than you've ever been, this is the cruel injuatice of time.
Now could've been then, and a moment ago if things had been even slightly different Now could be radically different. Time-fuckery sometimes alters Now to be different from Then, or it could alter the future, which is the next now after this one.