Don't know why you're downvoted. Technically, our brains do get full, even this article basically says so. It's just that we don't experience error messages o

Don't know why you're downvoted. Technically, our brains do get full, even this article basically says so. It's just that we don't experience error messages or shut down when that happens - instead, old memories are replaced with new ones. The total capacity is limited, but the ability to create new memories is unhindered. I wish we could choose what we forget, but it seems it's possible to choose what you remember - just relearn that stuff or recall it more often, then it will be at the top of the search results, so to say :-)