Library shelves creak and groan under the weight of learned tomes. They contain more books than you and I could ever plough through – even if we were to make it our life’s work AND enrol on a speed-reading course. Ought we to feel uncomfortable about the amount of information we are never likely to digest?

Might there be something missing from our lives? Well, that rather depends on whether you believe that the universe is essentially complicated – or basically simple.

Right now, I can safely assume the latter. What I don't know, won't hurt me and I don't need to know. So I will just relax.