Son: Daddy, Daddy! Look at the diagonal bracing on the torsion rods!
Father: Aye, son. But not just that – I think you’ll find on descending the six-lane slide that the rolled steel joists have been galvanised for protection.
Son: Brilliaaaant!
Father: Aye. But make sure to hold tight to the aluminium angle-supported safety rail while you ascend the staircase, son, or you’ll fall, and the pigment flowing forth from your cracked head certainly won’t enhance your appearance.