In linguistics we have a term for how you can use patterns to create new words: productivity. For example, the -ly suffix can be added to many adjectives to create new adverbs: “nice” becomes “nicely” while “able” becomes “ably.” That’s a productive pattern. What’s amazing is that children who are learning to speak a language natively start using such productive patterns intuitively, without ever being told explicitly how to do it. And they are correct most of the time. But when they misapply a productive pattern, it’s often funny. Tonight, I heard another funny. This evening Andrew and Kathryn (our 7 year old twins) decided they would sleep under a make-shift tent created by draping bed sheets over chairs and stools. As I was helping them lay down their make-shift beds, Andrew determined that he would use a huge beach towel as his “blanket.” Kathryn objected, misapplying a productive word-formation pattern:

“But . . . that’s not . . . blanketable.”

I’m still smiling. 🙂