I’ve had this theory for years, and have tried to explain it to friends and family over cocktails with little success. Maybe it makes no sense but here goes. It’s based on the analogy of the brain being like a hard drive. I know, I know…
You can’t just write data to a hard drive. Hard drives have to be formatted before you can use them. Formatting is kind of like numbering the pages of a blank book and leaving space for an index and table of contents. After it’s formatted, whenever you write in the book or change something, you update the index and table of contents.
But it’s a little more complicated than that. It’s more like each page has to be formatted, and you can only write so much on a single page, and the pages might not be in order, so you have to leave little “continued” notes at the beginning and end of each page so that someone reading it can trace the story.
And it’s a little more complicated than that. You’d like to be able to categorize your pages but since there is limited space, you can only come up with so many categories and extra bits of information, such as the date you wrote it, the day you modified, who is allowed to read it, who is allowed to erase or modify it, etc. These categories and tags have to be on every page so they better be useful. For example, the way most Unix filesystems are formatted, you don’t know the creation date for a file. It’s just not recorded and there’s no direct way to record it with the file. That saves space on every page.
Okay, the brain is very different. A slowly changing network of neurons, that frankly I don’t know the first thing about. But it does store and retrieve information. I know that if I study something before going to sleep, it’s much easier to learn it the next day. I know that it is difficult to learn completely new things (as in unusual and outside my skill set). I know that my dreams tend to be chopped up absurd versions of what happens to me in real life. I know that we forget our dreams. Massive quantities of dream experience are forgotten by everyone every morning. So if I’m forgetting 99% of my dreams but ’sleeping on it’ tends to help one understand things, what gives?
There is a Russian saying – “Morning is wiser.”
How in the heck does running your brain in high gear (dreaming) and then forgetting all of it make you wiser?
My theory is that daily experience is so complicated that our neural structures (no idea what sort of structures – could be actual connections or just collections of reinforcement in a network?) need to be customized to deal with it optimally ahead of time. Unlike a hard drive which might get formatted in NTFS for Windows, or mostly Ext3 for Unix, our neural structures get all sorts of pre-formatting done to them while we are sleeping, to be ready for the types of experience our brain expects us to have.
That’s the theory. Dreaming is your brain formatting itself.