Whatever you do, don’t walk under a ladder. No petting black cats and especially no breaking mirrors. Even though some tiny shards bring good luck. Throw a handful of salt over your shoulder. Wait… which shoulder was it again? Superstitions come in many different shapes and sizes. They often run in your family for generations. They’re something you believe in, even though they’re not in any religious texts and there’s no scientific evidence for them. You believe what you believe in spite of your faith. But why do you believe it?