How to Play with a Baby “What happened to your knee?” my daughter Laura asked. I glanced down and noticed a red, raw spot on my left knee. “Carpet burn, I guess,” I answered with a shrug. “Abel and I have been racing up and down the hallway.” “Oh, you poor thing!” “Naw,” I replied, “anything to hear his cackle!” Therein lies the truth. I’ll do anything to get a two-toothed grin, a chortle, or a cackle out of my…