watching 'through the wormhole'…i believe i have figured out time travel…

Random thoughts, —explaining why we never see time travelers…

You can only travel forward. And never back. If you go forward-only, we all have to wait until they invent a time machine. And that hasn't happened yet. When it does…everybody piles up in future ages, increasing the population of really lost disaffected people…

Wait, I believe I wrote that book…

or at least the short story that used to preface it.