The Buddhist explanation is that we feel this uneasiness because we’re always trying to get ground under our feet and it never quite works. We’re always looking for a permanent reference point, and it doesn’t exist. Everything is impermanent. Everything is always changing—fluid, unfixed, and open. Nothing is pin-down-able the way we’d like it to be. This is not actually bad news, but we all seem to be programmed for denial. We have absolutely no tolerance for uncertainty.