You will need to think, re-think, go work things out and learn some new things in the process. And in an ever-changing world, the quest for knowing the causes of things never ends. So get comfortable with being asked, with questioning yourself. Oh. And learning. Above all. Get comfortable with the idea that you will never know all the answers and all the causes of things, so the quest never ends.
And that, my friends, is the point of life, the universe and everything.