The center line of science literacy - which not many people tell you, but I feel this strongly, and I will go to my grave making this point - is how you think.
Neil deGrasse TysonWe account for all the matter and energy that we're familiar with, measure up how much gravity it should have, it's one-sixth of the gravity that's actually operating on the universe. We call that dark matter. It really should be called dark gravity. We don't know what that is.
Neil deGrasse TysonBut to measure cause and effect... you must ensure that a simple correlation, however tempting it may be, is not mistaken for a cause. In the 1990s the stork population of Germany increased and the German at-home birth rate rose as well. Shall we credit storks for airlifting the babies?
Neil deGrasse Tyson