Do you ever get stoned, go to a coffee shop to do some work, and look around at all the people smiling, talking, typing, sipping coffee, as if everything is fine, and think to yourself:

"Guys, guys, how are you all not deeply concerned that scientists don't know what gravity is and if one day it decides to tender its resignation, we'll have ninety seconds, tops, before we are flung far into deep, empty space, left to freeze and suffocate, never having had the chance to say goodbye to everyone we love?"

Okay, I, too, have not had that thought while stoned at a coffee shop.