So, what if every time you went to sleep and you woke up you passed into a nearby and very similar universe - but not quite the same. Depending on your choices and how you live your life, it's how you wake up and what new one you pop into on the other side - and everyone is just a little bit different. The whole world changes just a little bit every time you make a decision one way or the other.
Just because the world is static when you are awake - you have no idea what is happening when you're asleep. And when you wake up again, you have this foggy recollection of the past, and that's what we're going by.
We dream. Weird shit happens when you're dreaming. What's that about? We don't even know. We have no idea what that is. This soup of possibilities that's swirling through in between your ears while you're snoring up a storm.
And then boom - you wake up. Like, are you sure those memories are real? Are you sure this isn't a whole completely new universe that you're living in today.