Tweets from fictional characters can be sweet.
![](https://lh3.googleusercontent.com/blogger_img_proxy/AEn0k_uWDnF92C-4nxGbxAfgL8Dxl-fOhrIIpCaqP1sHqcAb8axTdg9XWA0bQwGxBGLBkXpP5mSnTKLjVe1LfRFf6EHbSnHG4xaOfH_ZlMO4vbeYzEry28LWctAIv-XYs9D0PuJJwyVZELhPEHIABns=s0-d)
Maybe intelligent life evolved only to get rid of all the oil and coal that's built up from fossilization? Once it's gone we go away?
I (don't) mean to imply that there's a "plan" for the Earth, just that maybe planets that don't burn off their fossil deposits get too dirty.