Everything that happens is caused.

Every breath of an ant and rotation of a galaxy acts because it’s been acted upon. Whatever led to The Big Bang was simply (well, complicatedly) the first dominos falling in a chain of events that eventually caused enough free time in your day for you to read this. It’s as if God is watching his universal Rube Goldberg machine whir and spin; the sparkle of billions of galaxies glistening as he observes a domino effect turn single-celled organisms into communities of cells with plinko machines of synapse-firings that vie for behaviors that those cells perceive as decisions — all while light years away black holes warp time into their immense gravity. Are your hiccups cured yet? I can keep going.

Science is terrifying.