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by veli_joza 2978 days ago
I like your explanation for changing lines of text, but I don't think brain is actively generating any content. I think brain is just trying its best to apply daytime pattern recognition to un-orchestrated neural activity. The most recently learned patterns are the strongest, which is why often you'll dream stuff that happened that day. If you spend a lot of time performing single activity (like gaming), the dream will be intensive and focused; this is called the Tetris effect.