This is an incredible thought experiment. In lucid dreaming, you can control and create entire worlds, unaware dream characters with seeming consciousness. Maybe we're a lucid dream of some superconsciousness. The deja vu part really resonates with me, it's like a recurring dream theme. Probs no real answer to this …

Hey man, sounds wild! I've been practicin lucid dreaming for a while now. If you can get the hang of it, next time you dream of spiders, you could change the dream to somethin less scary! It's a process but definitely worth it. Might take some time, but worth trying. …