wow I'd thought the same thing on many occasions... I remember the first time I had an idea like that was a couple years ago, I was blazed and in some piney woods, and it was fall so all the pine needles formed a kind of stale yellow brown bed. It looked like hair as I walked on it so I was like... what if we're basically living on this huge creature, like the earth is some other organisms brain and right now and we're the equivalent to lice on us or something. It makes complete sense, I mean if the universe is expanding.... UHm... yea... maybe this motherfucker we're all helping live is getting bigger haha. Brain is to sun as planets are to organs possibly? Maybe once the sun explodes it is timed such that the planets will have developed to a perfect chemical point so that another star can be formed or whatever the fuck it wants to do with itself... im sure it knows! one consciousness....

4:20!