Three of us, the three adults in the household presently, heard it... we placed Caroline in her swing so that we could sit down to dinner. We watched as she clearly kept her eyes on the mobile spinning above her. We listened to increased babble, more vocalizing than we had heard before. We watched as a smile broke out. And then we heard it... a genuine laugh... two days shy of one month old, our girl LAUGHED!
Of course she's been grumpy since... but we want to remember this moment.