My wife says our kids make us smart. She means that our daughters make us aware of things in the world that we otherwise would know nothing about.
For example, when our girls were small we became very familiar with a parallel universe of:
Safety: outlet plugs, edge and corner guards, bathtub seats, back-facing car seats, baby monitors, water wings.
Books: When Hippos Go Berserk, Moo Baa La La La, The Very Hungry Caterpillar, Chicka Chicka Boom Boom, Lily’s Purple Plastic Purse, We’re Going On a Bear Hunt, Pigs Aplenty Pigs Galore (my favorite).