Okay, bear with me for a moment and get ready to read. (for tl:dr, just skip it I don't want to break this down)
We've all woken from an amazing night of dreaming, then forget that dream. We know it's awesome and we know we want it to happen again, but we can't remember it? It sucks
I know what you're about to say. "Yeah happens to us all, *******************"
Calm down there, Kanye. Settle in for a long read. It'll be worth your time.
Here goes... what if our brain literally had memory like a computer has RAM. our brain can't do too many things at once, just like that Toshiba your dad bought you can barely manage a solid game of BF3. So when we go through the day our RAM is used up and requires caffeine or sleep to refresh. We get in bed with low RAM and we barely have enough to get ourselves to sleep.
After a little while, you've slept enough and restored enough RAM to go into REM sleep, the sleep mode where you actually dream. Your brain uses up the RAM conjuring the environment of your dream and putting you through it, but it doesn't have enough RAM left over to commit the experience to memory.
Don't suck my dick yet, fellow FJers, There's more to come. Once you run out of RAM your brain goes back into deep sleep, but sleep not as deep and a cycle occurs, the end of each cycle resulting in just a bit more RAM stored in your brain for the next day.
Ever notice how the dreams you'll probably remember the most occur within an hour of your wake-up? (by wake-up I mean return to consciousness, not waking up and lying in bed for a half an hour doing nothing you lazy *****). This is because your brain generates enough RAM over the cycles of the night to commit some of those events to memory, if not all of them.
Half of you had your mind blown, 49% of you are like "okay, but I doubt it" and the 1% of you have your dick out and decided to skip because you want another pony post.
For those who need more theoretical proof, I've got it... You know when you take a nap in the middle of a day? You tend to dream during those naps, even if those dreams are just you feeling the time going by but not really noticing it. You remember it because your brain had enough RAM in it to commit it to memory, since it's not the end of the day, and you haven't wasted your RAM.
It's been a long read and I hope you've found some vestige of relatibility in this post. Not really "funny" but I blew my own mind with this.
PS. The tags are shy.